cve-2025-20135
Vulnerability from cvelistv5
Published
2025-08-14 16:28
Modified
2025-08-14 19:21
Severity ?
EPSS score ?
Summary
Cisco Adaptive Security Appliance and Firepower Threat Defense Software DHCP Denial of Service Vulnerability
References
Impacted products
{ "containers": { "adp": [ { "metrics": [ { "other": { "content": { "id": "CVE-2025-20135", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "timestamp": "2025-08-14T18:41:32.287677Z", "version": "2.0.3" }, "type": "ssvc" } } ], "providerMetadata": { "dateUpdated": "2025-08-14T19:21:28.891Z", "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP" }, "title": "CISA ADP Vulnrichment" } ], "cna": { "affected": [ { "defaultStatus": "unknown", "product": "Cisco Adaptive Security Appliance (ASA) Software", "vendor": "Cisco", "versions": [ { "status": "affected", "version": "9.12.3" }, { "status": "affected", "version": "9.8.3" }, { "status": "affected", "version": "9.12.1" }, { "status": "affected", "version": "9.8.1" }, { "status": "affected", "version": "9.12.2" }, { "status": "affected", "version": "9.8.2.45" }, { "status": "affected", "version": "9.8.2" }, { "status": "affected", "version": "9.8.4" }, { "status": "affected", "version": "9.14.1" }, { "status": "affected", "version": "9.12.4" }, { "status": "affected", "version": "9.8.2.26" }, { "status": "affected", "version": "9.8.2.24" }, { "status": "affected", "version": "9.8.2.15" }, { "status": "affected", "version": "9.8.2.14" }, { "status": "affected", "version": "9.8.2.35" }, { "status": "affected", "version": "9.8.2.20" }, { "status": "affected", "version": "9.8.2.8" }, { "status": "affected", "version": "9.8.2.17" }, { "status": "affected", "version": "9.8.2.28" }, { "status": "affected", "version": "9.8.2.33" }, { "status": "affected", "version": "9.8.2.38" }, { "status": "affected", "version": "9.8.4.25" }, { "status": "affected", "version": "9.12.3.2" }, { "status": "affected", "version": "9.12.3.7" }, { "status": "affected", "version": "9.8.3.18" }, { "status": "affected", "version": "9.8.3.14" }, { "status": "affected", "version": "9.8.4.15" }, { "status": "affected", "version": "9.8.4.8" }, { "status": "affected", "version": "9.8.1.7" }, { "status": "affected", "version": "9.8.3.29" }, { "status": "affected", "version": "9.14.1.10" }, { "status": "affected", "version": "9.12.2.5" }, { "status": "affected", "version": "9.8.4.22" }, { "status": "affected", "version": "9.12.3.12" }, { "status": "affected", "version": "9.8.4.7" }, { "status": "affected", "version": "9.8.4.17" }, { "status": "affected", "version": "9.8.3.16" }, { "status": "affected", "version": "9.8.4.20" }, { "status": "affected", "version": "9.8.3.11" }, { "status": "affected", "version": "9.12.1.3" }, { "status": "affected", "version": "9.8.4.3" }, { "status": "affected", "version": "9.12.2.4" }, { "status": "affected", "version": "9.8.4.12" }, { "status": "affected", "version": "9.12.1.2" }, { "status": "affected", "version": "9.8.3.26" }, { "status": "affected", "version": "9.8.1.5" }, { "status": "affected", "version": "9.12.2.9" }, { "status": "affected", "version": "9.12.3.9" }, { "status": "affected", "version": "9.8.3.21" }, { "status": "affected", "version": "9.8.4.10" }, { "status": "affected", "version": "9.12.2.1" }, { "status": "affected", "version": "9.12.4.2" }, { "status": "affected", "version": "9.14.1.6" }, { "status": "affected", "version": "9.8.3.8" }, { "status": "affected", "version": "9.14.1.15" }, { "status": "affected", "version": "9.14.1.19" }, { "status": "affected", "version": "9.8.4.26" }, { "status": "affected", "version": "9.12.4.4" }, { "status": "affected", "version": "9.14.1.30" }, { "status": "affected", "version": "9.8.4.29" }, { "status": "affected", "version": "9.12.4.7" }, { "status": "affected", "version": "9.14.2" }, { "status": "affected", "version": "9.12.4.8" }, { "status": "affected", "version": "9.8.4.32" }, { "status": "affected", "version": "9.12.4.10" }, { "status": "affected", "version": "9.14.2.4" }, { "status": "affected", "version": "9.14.2.8" }, { "status": "affected", "version": "9.12.4.13" }, { "status": "affected", "version": "9.8.4.33" }, { "status": "affected", "version": "9.14.2.13" }, { "status": "affected", "version": "9.8.4.34" }, { "status": "affected", "version": "9.12.4.18" }, { "status": "affected", "version": "9.8.4.35" }, { "status": "affected", "version": "9.14.2.15" }, { "status": "affected", "version": "9.12.4.24" }, { "status": "affected", "version": "9.16.1" }, { "status": "affected", "version": "9.8.4.39" }, { "status": "affected", "version": "9.14.3" }, { "status": "affected", "version": "9.12.4.26" }, { "status": "affected", "version": "9.16.1.28" }, { "status": "affected", "version": "9.14.3.1" }, { "status": "affected", "version": "9.12.4.29" }, { "status": "affected", "version": "9.14.3.9" }, { "status": "affected", "version": "9.16.2" }, { "status": "affected", "version": "9.12.4.30" }, { "status": "affected", "version": "9.16.2.3" }, { "status": "affected", "version": "9.8.4.40" }, { "status": "affected", "version": "9.14.3.11" }, { "status": "affected", "version": "9.12.4.35" }, { "status": "affected", "version": "9.8.4.41" }, { "status": "affected", "version": "9.15.1.1" }, { "status": "affected", "version": "9.14.3.13" }, { "status": "affected", "version": "9.16.2.7" }, { "status": "affected", "version": "9.12.4.37" }, { "status": "affected", "version": "9.14.3.15" }, { "status": "affected", "version": "9.17.1" }, { "status": "affected", "version": "9.16.2.11" }, { "status": "affected", "version": "9.14.3.18" }, { "status": "affected", "version": "9.16.2.13" }, { "status": "affected", "version": "9.12.4.39" }, { "status": "affected", "version": "9.12.4.38" }, { "status": "affected", "version": "9.8.4.43" }, { "status": "affected", "version": "9.14.4" }, { "status": "affected", "version": "9.16.2.14" }, { "status": "affected", "version": "9.17.1.7" }, { "status": "affected", "version": "9.12.4.40" }, { "status": "affected", "version": "9.16.3.3" }, { "status": "affected", "version": "9.14.4.6" }, { "status": "affected", "version": "9.16.3" }, { "status": "affected", "version": "9.16.3.14" }, { "status": "affected", "version": "9.17.1.9" }, { "status": "affected", "version": "9.14.4.7" }, { "status": "affected", "version": "9.12.4.41" }, { "status": "affected", "version": "9.17.1.10" }, { "status": "affected", "version": "9.8.4.44" }, { "status": "affected", "version": "9.18.1" }, { "status": "affected", "version": "9.12.4.47" }, { "status": "affected", "version": "9.14.4.12" }, { "status": "affected", "version": "9.16.3.15" }, { "status": "affected", "version": "9.18.1.3" }, { "status": "affected", "version": "9.17.1.11" }, { "status": "affected", "version": "9.12.4.48" }, { "status": "affected", "version": "9.14.4.13" }, { "status": "affected", "version": "9.18.2" }, { "status": "affected", "version": "9.16.3.19" }, { "status": "affected", "version": "9.17.1.13" }, { "status": "affected", "version": "9.12.4.50" }, { "status": "affected", "version": "9.14.4.14" }, { "status": "affected", "version": "9.17.1.15" }, { "status": "affected", "version": "9.8.4.45" }, { "status": "affected", "version": "9.12.4.52" }, { "status": "affected", "version": "9.14.4.15" }, { "status": "affected", "version": "9.16.3.23" }, { "status": "affected", "version": "9.18.2.5" }, { "status": "affected", "version": "9.16.4" }, { "status": "affected", "version": "9.12.4.54" }, { "status": "affected", "version": "9.14.4.17" }, { "status": "affected", "version": "9.8.4.46" }, { "status": "affected", "version": "9.17.1.20" }, { "status": "affected", "version": "9.18.2.7" }, { "status": "affected", "version": "9.19.1" }, { "status": "affected", "version": "9.16.4.9" }, { "status": "affected", "version": "9.12.4.55" }, { "status": "affected", "version": "9.18.2.8" }, { "status": "affected", "version": "9.14.4.22" }, { "status": "affected", "version": "9.16.4.14" }, { "status": "affected", "version": "9.8.4.48" }, { "status": "affected", "version": "9.18.3" }, { "status": "affected", "version": "9.19.1.5" }, { "status": "affected", "version": "9.14.4.23" }, { "status": "affected", "version": "9.12.4.56" }, { "status": "affected", "version": "9.16.4.18" }, { "status": "affected", "version": "9.17.1.30" }, { "status": "affected", "version": "9.19.1.9" }, { "status": "affected", "version": "9.18.3.39" }, { "status": "affected", "version": "9.16.4.19" }, { "status": "affected", "version": "9.12.4.58" }, { "status": "affected", "version": "9.19.1.12" }, { "status": "affected", "version": "9.18.3.46" }, { "status": "affected", "version": "9.16.4.27" }, { "status": "affected", "version": "9.19.1.18" }, { "status": "affected", "version": "9.18.3.53" }, { "status": "affected", "version": "9.18.3.55" }, { "status": "affected", "version": "9.16.4.38" }, { "status": "affected", "version": "9.17.1.33" }, { "status": "affected", "version": "9.12.4.62" }, { "status": "affected", "version": "9.16.4.39" }, { "status": "affected", "version": "9.18.3.56" }, { "status": "affected", "version": "9.20.1" }, { "status": "affected", "version": "9.16.4.42" }, { "status": "affected", "version": "9.19.1.22" }, { "status": "affected", "version": "9.18.4" }, { "status": "affected", "version": "9.20.1.5" }, { "status": "affected", "version": "9.18.4.5" }, { "status": "affected", "version": "9.19.1.24" }, { "status": "affected", "version": "9.16.4.48" }, { "status": "affected", "version": "9.18.4.8" }, { "status": "affected", "version": "9.20.2" }, { "status": "affected", "version": "9.19.1.27" }, { "status": "affected", "version": "9.12.4.65" }, { "status": "affected", "version": "9.16.4.55" }, { "status": "affected", "version": "9.18.4.22" }, { "status": "affected", "version": "9.20.2.10" }, { "status": "affected", "version": "9.16.4.57" }, { "status": "affected", "version": "9.19.1.28" }, { "status": "affected", "version": "9.17.1.39" }, { "status": "affected", "version": "9.12.4.67" }, { "status": "affected", "version": "9.14.4.24" }, { "status": "affected", "version": "9.18.4.24" }, { "status": "affected", "version": "9.20.2.21" }, { "status": "affected", "version": "9.16.4.61" }, { "status": "affected", "version": "9.19.1.31" }, { "status": "affected", "version": "9.18.4.29" }, { "status": "affected", "version": "9.20.2.22" }, { "status": "affected", "version": "9.16.4.62" }, { "status": "affected", "version": "9.18.4.34" }, { "status": "affected", "version": "9.20.3" }, { "status": "affected", "version": "9.16.4.67" }, { "status": "affected", "version": "9.16.4.70" }, { "status": "affected", "version": "9.18.4.40" }, { "status": "affected", "version": "9.22.1.1" }, { "status": "affected", "version": "9.16.4.71" }, { "status": "affected", "version": "9.20.3.4" }, { "status": "affected", "version": "9.18.4.47" }, { "status": "affected", "version": "9.17.1.45" }, { "status": "affected", "version": "9.19.1.37" }, { "status": "affected", "version": "9.17.1.46" }, { "status": "affected", "version": "9.19.1.38" }, { "status": "affected", "version": "9.22.1.2" } ] }, { "defaultStatus": "unknown", "product": "Cisco Firepower Threat Defense Software", "vendor": "Cisco", "versions": [ { "status": "affected", "version": "6.2.3.14" }, { "status": "affected", "version": "6.4.0.1" }, { "status": "affected", "version": "6.2.3.7" }, { "status": "affected", "version": "6.2.3" }, { "status": "affected", "version": "6.4.0.2" }, { "status": "affected", "version": "6.2.3.9" }, { "status": "affected", "version": "6.2.3.1" }, { "status": "affected", "version": "6.2.3.2" }, { "status": "affected", "version": "6.4.0.5" }, { "status": "affected", "version": "6.2.3.10" }, { "status": "affected", "version": "6.4.0" }, { "status": "affected", "version": "6.4.0.3" }, { "status": "affected", "version": "6.2.3.6" }, { "status": "affected", "version": "6.4.0.4" }, { "status": "affected", "version": "6.2.3.15" }, { "status": "affected", "version": "6.2.3.5" }, { "status": "affected", "version": "6.2.3.4" }, { "status": "affected", "version": "6.2.3.3" }, { "status": "affected", "version": "6.2.3.8" }, { "status": "affected", "version": "6.4.0.6" }, { "status": "affected", "version": "6.2.3.11" }, { "status": "affected", "version": "6.2.3.12" }, { "status": "affected", "version": "6.2.3.13" }, { "status": "affected", "version": "6.4.0.7" }, { "status": "affected", "version": "6.4.0.8" }, { "status": "affected", "version": "6.6.0" }, { "status": "affected", "version": "6.4.0.9" }, { "status": "affected", "version": "6.2.3.16" }, { "status": "affected", "version": "6.6.0.1" }, { "status": "affected", "version": "6.6.1" }, { "status": "affected", "version": "6.4.0.10" }, { "status": "affected", "version": "6.4.0.11" }, { "status": "affected", "version": "6.6.3" }, { "status": "affected", "version": "6.6.4" }, { "status": "affected", "version": "6.4.0.12" }, { "status": "affected", "version": "7.0.0" }, { "status": "affected", "version": "6.2.3.17" }, { "status": "affected", "version": "7.0.0.1" }, { "status": "affected", "version": "6.6.5" }, { "status": "affected", "version": "7.0.1" }, { "status": "affected", "version": "7.1.0" }, { "status": "affected", "version": "6.4.0.13" }, { "status": "affected", "version": "6.6.5.1" }, { "status": "affected", "version": "6.2.3.18" }, { "status": "affected", "version": "7.0.1.1" }, { "status": "affected", "version": "6.4.0.14" }, { "status": "affected", "version": "7.1.0.1" }, { "status": "affected", "version": "6.6.5.2" }, { "status": "affected", "version": "7.0.2" }, { "status": "affected", "version": "6.4.0.15" }, { "status": "affected", "version": "7.2.0" }, { "status": "affected", "version": "7.0.2.1" }, { "status": "affected", "version": "7.0.3" }, { "status": "affected", "version": "6.6.7" }, { "status": "affected", "version": "7.1.0.2" }, { "status": "affected", "version": "7.2.0.1" }, { "status": "affected", "version": "7.0.4" }, { "status": "affected", "version": "7.2.1" }, { "status": "affected", "version": "7.0.5" }, { "status": "affected", "version": "6.4.0.16" }, { "status": "affected", "version": "7.3.0" }, { "status": "affected", "version": "7.2.2" }, { "status": "affected", "version": "7.2.3" }, { "status": "affected", "version": "6.6.7.1" }, { "status": "affected", "version": "7.3.1" }, { "status": "affected", "version": "7.1.0.3" }, { "status": "affected", "version": "7.2.4" }, { "status": "affected", "version": "7.0.6" }, { "status": "affected", "version": "7.2.5" }, { "status": "affected", "version": "7.2.4.1" }, { "status": "affected", "version": "7.3.1.1" }, { "status": "affected", "version": "7.4.0" }, { "status": "affected", "version": "6.4.0.17" }, { "status": "affected", "version": "7.0.6.1" }, { "status": "affected", "version": "7.2.5.1" }, { "status": "affected", "version": "7.4.1" }, { "status": "affected", "version": "7.2.6" }, { "status": "affected", "version": "7.0.6.2" }, { "status": "affected", "version": "7.4.1.1" }, { "status": "affected", "version": "6.6.7.2" }, { "status": "affected", "version": "6.4.0.18" }, { "status": "affected", "version": "7.2.7" }, { "status": "affected", "version": "7.2.5.2" }, { "status": "affected", "version": "7.3.1.2" }, { "status": "affected", "version": "7.2.8" }, { "status": "affected", "version": "7.6.0" }, { "status": "affected", "version": "7.4.2" }, { "status": "affected", "version": "7.2.8.1" }, { "status": "affected", "version": "7.0.6.3" }, { "status": "affected", "version": "7.4.2.1" }, { "status": "affected", "version": "7.2.9" } ] } ], "descriptions": [ { "lang": "en", "value": "A vulnerability in the DHCP client functionality of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, adjacent attacker to exhaust available memory.\r\n\r\nThis vulnerability is due to improper validation of incoming DHCP packets. An attacker could exploit this vulnerability by repeatedly sending crafted DHCPv4 packets to an affected device. A successful exploit could allow the attacker to exhaust available memory, which would affect availability of services and prevent new processes from starting, resulting in a Denial of Service (DoS) condition that would require a manual reboot.\r\nNote: On Cisco Secure FTD Software, this vulnerability does not affect management interfaces." } ], "exploits": [ { "lang": "en", "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory." } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "LOW", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1" }, "format": "cvssV3_1" } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-401", "description": "Missing Release of Memory after Effective Lifetime", "lang": "en", "type": "cwe" } ] } ], "providerMetadata": { "dateUpdated": "2025-08-14T16:28:16.508Z", "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco" }, "references": [ { "name": "cisco-sa-asaftd-dhcp-qj7nGs4N", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-dhcp-qj7nGs4N" } ], "source": { "advisory": "cisco-sa-asaftd-dhcp-qj7nGs4N", "defects": [ "CSCwm08235" ], "discovery": "INTERNAL" }, "title": "Cisco Adaptive Security Appliance and Firepower Threat Defense Software DHCP Denial of Service Vulnerability" } }, "cveMetadata": { "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "assignerShortName": "cisco", "cveId": "CVE-2025-20135", "datePublished": "2025-08-14T16:28:16.508Z", "dateReserved": "2024-10-10T19:15:13.213Z", "dateUpdated": "2025-08-14T19:21:28.891Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2025-20135\",\"sourceIdentifier\":\"psirt@cisco.com\",\"published\":\"2025-08-14T17:15:34.827\",\"lastModified\":\"2025-08-15T13:12:51.217\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability in the DHCP client functionality of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, adjacent attacker to exhaust available memory.\\r\\n\\r\\nThis vulnerability is due to improper validation of incoming DHCP packets. An attacker could exploit this vulnerability by repeatedly sending crafted DHCPv4 packets to an affected device. A successful exploit could allow the attacker to exhaust available memory, which would affect availability of services and prevent new processes from starting, resulting in a Denial of Service (DoS) condition that would require a manual reboot.\\r\\nNote: On Cisco Secure FTD Software, this vulnerability does not affect management interfaces.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L\",\"baseScore\":4.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":2.8,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-401\"}]}],\"references\":[{\"url\":\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-dhcp-qj7nGs4N\",\"source\":\"psirt@cisco.com\"}]}}" } }
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.