cve-2025-20140
Vulnerability from cvelistv5
Published
2025-05-07 17:36
Modified
2025-05-07 17:51
Severity ?
EPSS score ?
Summary
A vulnerability in the Wireless Network Control daemon (wncd) of Cisco IOS XE Software for Wireless LAN Controllers (WLCs) could allow an unauthenticated, adjacent wireless attacker to cause a denial of service (DoS) condition.
This vulnerability is due to improper memory management. An attacker could exploit this vulnerability by sending a series of IPv6 network requests from an associated wireless IPv6 client to an affected device. To associate a client to a device, an attacker may first need to authenticate to the network, or associate freely in the case of a configured open network. A successful exploit could allow the attacker to cause the wncd process to consume available memory and eventually cause the device to stop responding, resulting in a DoS condition.
References
Impacted products
| ▼ | Vendor | Product |
|---|---|---|
| Cisco | Cisco IOS XE Software |
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"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the Wireless Network Control daemon (wncd) of Cisco IOS XE Software for Wireless LAN Controllers (WLCs) could allow an unauthenticated, adjacent wireless attacker to cause a denial of service (DoS) condition.\r\n\r This vulnerability is due to improper memory management. An attacker could exploit this vulnerability by sending a series of IPv6 network requests from an associated wireless IPv6 client to an affected device. To associate a client to a device, an attacker may first need to authenticate to the network, or associate freely in the case of a configured open network. A successful exploit could allow the attacker to cause the wncd process to consume available memory and eventually cause the device to stop responding, resulting in a DoS condition."
}
],
"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."
}
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"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
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"cveId": "CVE-2025-20140",
"datePublished": "2025-05-07T17:36:49.207Z",
"dateReserved": "2024-10-10T19:15:13.214Z",
"dateUpdated": "2025-05-07T17:51:42.769Z",
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"nvd": "{\"cve\":{\"id\":\"CVE-2025-20140\",\"sourceIdentifier\":\"psirt@cisco.com\",\"published\":\"2025-05-07T18:15:36.640\",\"lastModified\":\"2025-05-08T14:39:09.683\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability in the Wireless Network Control daemon (wncd) of Cisco IOS XE Software for Wireless LAN Controllers (WLCs) could allow an unauthenticated, adjacent wireless attacker to cause a denial of service (DoS) condition.\\r\\n\\r This vulnerability is due to improper memory management. An attacker could exploit this vulnerability by sending a series of IPv6 network requests from an associated wireless IPv6 client to an affected device. To associate a client to a device, an attacker may first need to authenticate to the network, or associate freely in the case of a configured open network. A successful exploit could allow the attacker to cause the wncd process to consume available memory and eventually cause the device to stop responding, resulting in a DoS condition.\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad en el demonio de control de red inal\u00e1mbrica (wncd) del software Cisco IOS XE para controladores de LAN inal\u00e1mbrica (WLC) podr\u00eda permitir que un atacante inal\u00e1mbrico adyacente no autenticado provoque una denegaci\u00f3n de servicio (DoS). Esta vulnerabilidad se debe a una gesti\u00f3n de memoria inadecuada. Un atacante podr\u00eda explotarla enviando una serie de solicitudes de red IPv6 desde un cliente inal\u00e1mbrico IPv6 asociado a un dispositivo afectado. Para asociar un cliente a un dispositivo, el atacante podr\u00eda necesitar primero autenticarse en la red o asociarse libremente en el caso de una red abierta configurada. Una explotaci\u00f3n exitosa podr\u00eda permitir al atacante provocar que el proceso wncd consuma memoria disponible y, finalmente, que el dispositivo deje de responder, lo que resulta en una denegaci\u00f3n de servicio (DoS).\"}],\"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:C/C:N/I:N/A:H\",\"baseScore\":7.4,\"baseSeverity\":\"HIGH\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":4.0}]},\"weaknesses\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-789\"}]}],\"references\":[{\"url\":\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wlc-wncd-p6Gvt6HL\",\"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.