{
    "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"
            }
        }
    }
}