{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-57191", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-24T02:00:46.799Z", "datePublished": "2026-10-27T21:32:23.714Z", "dateUpdated": "2026-10-27T21:32:23.714Z"}, "containers": {"cna": {"title": "Asterisk: Stack buffer overflow in MWI NOTIFY Message-Account parsing", "problemTypes": [{"descriptions": [{"cweId": "CWE-120", "lang": "en", "description": "CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-787", "lang": "en", "description": "CWE-787: Out-of-bounds Write", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "HIGH", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.2, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/asterisk/asterisk/security/advisories/GHSA-589g-qgf8-m6mx", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/asterisk/asterisk/security/advisories/GHSA-589g-qgf8-m6mx"}, {"name": "https://github.com/asterisk/asterisk/commit/0e89514084490070c5ecee419ec5ee37b7c49528", "tags": ["x_refsource_MISC"], "url": "https://github.com/asterisk/asterisk/commit/0e89514084490070c5ecee419ec5ee37b7c49528"}, {"name": "https://github.com/asterisk/asterisk/commit/647b35c3cfd4a2cc3b1fb7560b085feba5c24b4b", "tags": ["x_refsource_MISC"], "url": "https://github.com/asterisk/asterisk/commit/647b35c3cfd4a2cc3b1fb7560b085feba5c24b4b"}, {"name": "https://github.com/asterisk/asterisk/commit/7a1ffcdf38cc76d1c4eae51651667f3fd4548ab0", "tags": ["x_refsource_MISC"], "url": "https://github.com/asterisk/asterisk/commit/7a1ffcdf38cc76d1c4eae51651667f3fd4548ab0"}, {"name": "https://github.com/asterisk/asterisk/commit/b4be3bd67ce4ac35b94fbfa860cdd9e1c906610b", "tags": ["x_refsource_MISC"], "url": "https://github.com/asterisk/asterisk/commit/b4be3bd67ce4ac35b94fbfa860cdd9e1c906610b"}, {"name": "https://github.com/asterisk/asterisk/commit/b5281828dad7d44658439ba6393fe6be3328a4bd", "tags": ["x_refsource_MISC"], "url": "https://github.com/asterisk/asterisk/commit/b5281828dad7d44658439ba6393fe6be3328a4bd"}, {"name": "https://github.com/asterisk/asterisk/commit/dca516f6d895e8867d48fa56b6ce7f05b6f7457a", "tags": ["x_refsource_MISC"], "url": "https://github.com/asterisk/asterisk/commit/dca516f6d895e8867d48fa56b6ce7f05b6f7457a"}, {"name": "https://github.com/asterisk/asterisk/commit/ee1b66a5e40733ba0b9fad7fc4d032cabbe1dd75", "tags": ["x_refsource_MISC"], "url": "https://github.com/asterisk/asterisk/commit/ee1b66a5e40733ba0b9fad7fc4d032cabbe1dd75"}, {"name": "https://github.com/asterisk/asterisk/releases/tag/20.20.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/asterisk/asterisk/releases/tag/20.20.1"}, {"name": "https://github.com/asterisk/asterisk/releases/tag/21.12.3", "tags": ["x_refsource_MISC"], "url": "https://github.com/asterisk/asterisk/releases/tag/21.12.3"}, {"name": "https://github.com/asterisk/asterisk/releases/tag/22.10.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/asterisk/asterisk/releases/tag/22.10.1"}, {"name": "https://github.com/asterisk/asterisk/releases/tag/23.4.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/asterisk/asterisk/releases/tag/23.4.1"}, {"name": "https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11", "tags": ["x_refsource_MISC"], "url": "https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11"}, {"name": "https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3", "tags": ["x_refsource_MISC"], "url": "https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3"}, {"name": "https://github.com/asterisk/asterisk/tree/24.0.0-pre1", "tags": ["x_refsource_MISC"], "url": "https://github.com/asterisk/asterisk/tree/24.0.0-pre1"}], "affected": [{"vendor": "asterisk", "product": "asterisk", "versions": [{"version": "< 20.20.1", "status": "affected"}, {"version": ">= 21.0.0-pre1, < 21.12.3", "status": "affected"}, {"version": ">= 22.0.0-pre1, < 22.10.1", "status": "affected"}, {"version": ">= 23.0.0-pre1, < 23.4.1", "status": "affected"}]}, {"vendor": "asterisk", "product": "certified-asterisk", "versions": [{"version": "< 20.7-cert11", "status": "affected"}, {"version": ">= 22.8-cert1-pre1, < 22.8-cert3", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-27T21:32:23.714Z"}, "descriptions": [{"lang": "en", "value": "Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an unbounded `sscanf` in `res_pjsip_pubsub` when parsing the `MWI NOTIFY` `Message-Account` field may allow an unauthenticated attacker to send a carefully crafted packet that causes a stack buffer overflow and corrupts the underlying transport, permanently disabling all SIP functionality. An Asterisk restart is required to restore full operation. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3."}], "source": {"advisory": "GHSA-589g-qgf8-m6mx", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "asterisk", "vendor": "asterisk", "versions": [{"status": "affected", "version": "< 20.20.1"}, {"status": "affected", "version": ">= 21.0.0-pre1, < 21.12.3"}, {"status": "affected", "version": ">= 22.0.0-pre1, < 22.10.1"}, {"status": "affected", "version": ">= 23.0.0-pre1, < 23.4.1"}]}, {"product": "certified-asterisk", "vendor": "asterisk", "versions": [{"status": "affected", "version": "< 20.7-cert11"}, {"status": "affected", "version": ">= 22.8-cert1-pre1, < 22.8-cert3"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an unbounded `sscanf` in `res_pjsip_pubsub` when parsing the `MWI NOTIFY` `Message-Account` field may allow an unauthenticated attacker to send a carefully crafted packet that causes a stack buffer overflow and corrupts the underlying transport, permanently disabling all SIP functionality. An Asterisk restart is required to restore full operation. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3."}], "id": "CVE-2026-57191", "lastModified": "2026-10-27T22:17:27.390", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.2, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-27T22:17:27.390", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/asterisk/asterisk/commit/0e89514084490070c5ecee419ec5ee37b7c49528"}, {"source": "security-advisories@github.com", "url": "https://github.com/asterisk/asterisk/commit/647b35c3cfd4a2cc3b1fb7560b085feba5c24b4b"}, {"source": "security-advisories@github.com", "url": "https://github.com/asterisk/asterisk/commit/7a1ffcdf38cc76d1c4eae51651667f3fd4548ab0"}, {"source": "security-advisories@github.com", "url": "https://github.com/asterisk/asterisk/commit/b4be3bd67ce4ac35b94fbfa860cdd9e1c906610b"}, {"source": "security-advisories@github.com", "url": "https://github.com/asterisk/asterisk/commit/b5281828dad7d44658439ba6393fe6be3328a4bd"}, {"source": "security-advisories@github.com", "url": "https://github.com/asterisk/asterisk/commit/dca516f6d895e8867d48fa56b6ce7f05b6f7457a"}, {"source": "security-advisories@github.com", "url": "https://github.com/asterisk/asterisk/commit/ee1b66a5e40733ba0b9fad7fc4d032cabbe1dd75"}, {"source": "security-advisories@github.com", "url": "https://github.com/asterisk/asterisk/releases/tag/20.20.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/asterisk/asterisk/releases/tag/21.12.3"}, {"source": "security-advisories@github.com", "url": "https://github.com/asterisk/asterisk/releases/tag/22.10.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/asterisk/asterisk/releases/tag/23.4.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11"}, {"source": "security-advisories@github.com", "url": "https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3"}, {"source": "security-advisories@github.com", "url": "https://github.com/asterisk/asterisk/security/advisories/GHSA-589g-qgf8-m6mx"}, {"source": "security-advisories@github.com", "url": "https://github.com/asterisk/asterisk/tree/24.0.0-pre1"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-120"}, {"lang": "en", "value": "CWE-787"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

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