{
    "id": "CVE-2022-21723",
    "published": "2022-01-27 00:15:07",
    "last_modified": "2026-06-17 04:26:51",
    "cvss_score": "9.1",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
    "cwe": "CWE-125",
    "description": "PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In versions 2.11.1 and prior, parsing an incoming SIP message that contains a malformed multipart can potentially cause out-of-bound read access. This issue affects all PJSIP users that accept SIP multipart. The patch is available as commit in the `master` branch. There are no known workarounds.",
    "epss_score": "0.04357",
    "epss_percentile": "0.90985",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-08 18:17:30",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.1), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "asterisk",
            "product": "certified_asterisk"
        },
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "sangoma",
            "product": "asterisk"
        },
        {
            "vendor": "teluu",
            "product": "pjsip"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://packetstormsecurity.com/files/166227/Asterisk-Project-Security-Advisory-AST-2022-006.html",
        "http://seclists.org/fulldisclosure/2022/Mar/2",
        "https://github.com/pjsip/pjproject/commit/077b465c33f0aec05a49cd2ca456f9a1b112e896",
        "https://github.com/pjsip/pjproject/security/advisories/GHSA-7fw8-54cv-r7pm",
        "https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html",
        "https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html",
        "https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html",
        "https://security.gentoo.org/glsa/202210-37",
        "https://www.debian.org/security/2022/dsa-5285",
        "http://packetstormsecurity.com/files/166227/Asterisk-Project-Security-Advisory-AST-2022-006.html",
        "http://seclists.org/fulldisclosure/2022/Mar/2",
        "https://github.com/pjsip/pjproject/commit/077b465c33f0aec05a49cd2ca456f9a1b112e896",
        "https://github.com/pjsip/pjproject/security/advisories/GHSA-7fw8-54cv-r7pm",
        "https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html",
        "https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html",
        "https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html",
        "https://lists.debian.org/debian-lts-announce/2024/09/msg00030.html",
        "https://security.gentoo.org/glsa/202210-37",
        "https://www.debian.org/security/2022/dsa-5285"
    ]
}