cve-2025-8760
Vulnerability from cvelistv5
Published
2025-08-13 06:14
Modified
2025-08-13 06:14
Severity ?
9.3 (Critical) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/RL:W/RC:R
9.8 (Critical) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/RL:W/RC:R
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/RL:W/RC:R
9.8 (Critical) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/RL:W/RC:R
EPSS score ?
Summary
INSTAR 2K+/4K fcgi_server base64_decode buffer overflow
References
{ "containers": { "cna": { "affected": [ { "modules": [ "fcgi_server" ], "product": "2K+", "vendor": "INSTAR", "versions": [ { "status": "affected", "version": "3.11.1 Build 1124" } ] }, { "modules": [ "fcgi_server" ], "product": "4K", "vendor": "INSTAR", "versions": [ { "status": "affected", "version": "3.11.1 Build 1124" } ] } ], "credits": [ { "lang": "en", "type": "finder", "value": "Michael Imfeld (modzero AG)" } ], "descriptions": [ { "lang": "en", "value": "A vulnerability was identified in INSTAR 2K+ and 4K 3.11.1 Build 1124. This affects the function base64_decode of the component fcgi_server. The manipulation of the argument Authorization leads to buffer overflow. It is possible to initiate the attack remotely." }, { "lang": "de", "value": "Dabei betrifft es die Funktion base64_decode der Komponente fcgi_server. Mittels dem Manipulieren des Arguments Authorization mit unbekannten Daten kann eine buffer overflow-Schwachstelle ausgenutzt werden. Die Umsetzung des Angriffs kann dabei \u00fcber das Netzwerk erfolgen." } ], "metrics": [ { "cvssV4_0": { "baseScore": 9.3, "baseSeverity": "CRITICAL", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X", "version": "4.0" } }, { "cvssV3_1": { "baseScore": 9.8, "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:W/RC:R", "version": "3.1" } }, { "cvssV3_0": { "baseScore": 9.8, "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:W/RC:R", "version": "3.0" } }, { "cvssV2_0": { "baseScore": 10, "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C/E:ND/RL:W/RC:UR", "version": "2.0" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-120", "description": "Buffer Overflow", "lang": "en", "type": "CWE" } ] }, { "descriptions": [ { "cweId": "CWE-119", "description": "Memory Corruption", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2025-08-13T06:14:02.783Z", "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB" }, "references": [ { "name": "VDB-319863 | INSTAR 2K+/4K fcgi_server base64_decode buffer overflow", "tags": [ "vdb-entry", "technical-description" ], "url": "https://vuldb.com/?id.319863" }, { "name": "VDB-319863 | CTI Indicators (IOB, IOC, IOA)", "tags": [ "signature", "permissions-required" ], "url": "https://vuldb.com/?ctiid.319863" }, { "tags": [ "related" ], "url": "https://modzero.com/static/MZ-25-03_modzero_INSTAR.pdf" } ], "timeline": [ { "lang": "en", "time": "2025-08-13T00:00:00.000Z", "value": "Advisory disclosed" }, { "lang": "en", "time": "2025-08-13T02:00:00.000Z", "value": "VulDB entry created" }, { "lang": "en", "time": "2025-08-13T08:18:23.000Z", "value": "VulDB entry last update" } ], "title": "INSTAR 2K+/4K fcgi_server base64_decode buffer overflow" } }, "cveMetadata": { "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "assignerShortName": "VulDB", "cveId": "CVE-2025-8760", "datePublished": "2025-08-13T06:14:02.783Z", "dateReserved": "2025-08-08T15:37:24.885Z", "dateUpdated": "2025-08-13T06:14:02.783Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2025-8760\",\"sourceIdentifier\":\"cna@vuldb.com\",\"published\":\"2025-08-13T07:15:28.637\",\"lastModified\":\"2025-08-13T07:15:28.637\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability was identified in INSTAR 2K+ and 4K 3.11.1 Build 1124. This affects the function base64_decode of the component fcgi_server. The manipulation of the argument Authorization leads to buffer overflow. It is possible to initiate the attack remotely.\"}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X\",\"baseScore\":9.3,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"HIGH\",\"vulnIntegrityImpact\":\"HIGH\",\"vulnAvailabilityImpact\":\"HIGH\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}],\"cvssMetricV31\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:C/I:C/A:C\",\"baseScore\":10.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"COMPLETE\",\"integrityImpact\":\"COMPLETE\",\"availabilityImpact\":\"COMPLETE\"},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":10.0,\"impactScore\":10.0,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-119\"},{\"lang\":\"en\",\"value\":\"CWE-120\"}]}],\"references\":[{\"url\":\"https://modzero.com/static/MZ-25-03_modzero_INSTAR.pdf\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/?ctiid.319863\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/?id.319863\",\"source\":\"cna@vuldb.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.