{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-57194",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-24T02:00:46.800Z",
        "datePublished": "2026-10-27T16:52:47.225Z",
        "dateUpdated": "2026-10-27T16:52:47.225Z"
    },
    "containers": {
        "cna": {
            "title": "Asterisk: chan_unistim DIALPAGE digit handling can overflow phone_number and crash Asterisk",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-787",
                            "lang": "en",
                            "description": "CWE-787: Out-of-bounds Write",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 5.9,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/asterisk/asterisk/security/advisories/GHSA-3g56-cgrh-95p5",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/asterisk/asterisk/security/advisories/GHSA-3g56-cgrh-95p5"
                },
                {
                    "name": "https://github.com/asterisk/asterisk/commit/430f423c84e4e32a462d907632b66c9793236e96",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/asterisk/asterisk/commit/430f423c84e4e32a462d907632b66c9793236e96"
                },
                {
                    "name": "https://github.com/asterisk/asterisk/commit/6da8e10c210d8e014c27c67235252e1dfc794446",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/asterisk/asterisk/commit/6da8e10c210d8e014c27c67235252e1dfc794446"
                },
                {
                    "name": "https://github.com/asterisk/asterisk/commit/6f414ec771eaa3318a4b2d28f70fa387196ae283",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/asterisk/asterisk/commit/6f414ec771eaa3318a4b2d28f70fa387196ae283"
                },
                {
                    "name": "https://github.com/asterisk/asterisk/commit/ce6e2233599b76bc30c33b4816b15609c8ddc8b6",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/asterisk/asterisk/commit/ce6e2233599b76bc30c33b4816b15609c8ddc8b6"
                },
                {
                    "name": "https://github.com/asterisk/asterisk/commit/d803b5370b05f39a6241b2556eb9894b02148e6a",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/asterisk/asterisk/commit/d803b5370b05f39a6241b2556eb9894b02148e6a"
                },
                {
                    "name": "https://github.com/asterisk/asterisk/commit/fc3a1cb3c386c962bfca8cd9d533d1390d4ad933",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/asterisk/asterisk/commit/fc3a1cb3c386c962bfca8cd9d533d1390d4ad933"
                },
                {
                    "name": "https://github.com/asterisk/asterisk/commit/ff65e4b0867bee12cdcb3a6219b976ee7ee08963",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/asterisk/asterisk/commit/ff65e4b0867bee12cdcb3a6219b976ee7ee08963"
                },
                {
                    "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": "2026-10-27T16:52:47.225Z"
            },
            "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 out-of-bounds write in `chan_unistim` `DIALPAGE` digit handling can overflow the `phone_number` field and crash Asterisk when an attacker sends a carefully crafted incoming request packet. The `chan_unistim` module must be loaded and configured with a valid `UNISTIM UDP port` that the attacker can reach. The attacker must register as a configured `phone MAC`, or the deployment must have an equivalent `production/autoprovisioning` path that allows the client to reach the main page. 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-3g56-cgrh-95p5",
                "discovery": "UNKNOWN"
            }
        }
    }
}