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Vulnerability record · CVE-2022-21723 · published 27 January 2022

CVE-2022-21723: Teluu pjsip out-of-bounds read vulnerability

Teluu · Pjsip

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.

9.1 CVSS 3.1 Critical EPSS 4.5% · top 8.9% CWE-125 · Out-of-bounds read
9.1CVSS 3.1 base score, v2 6.4
4.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
19References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/166227/Asterisk-Project-Security-Advisory-AST-2022-006.html Third Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2022/Mar/2 Mailing ListPatchThird Party Advisory
https://github.com/pjsip/pjproject/commit/077b465c33f0aec05a49cd2ca456f9a1b112e896 PatchThird Party Advisory
https://github.com/pjsip/pjproject/security/advisories/GHSA-7fw8-54cv-r7pm PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
https://security.gentoo.org/glsa/202210-37 Third Party Advisory
https://www.debian.org/security/2022/dsa-5285 Third Party Advisory
http://packetstormsecurity.com/files/166227/Asterisk-Project-Security-Advisory-AST-2022-006.html Third Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2022/Mar/2 Mailing ListPatchThird Party Advisory
https://github.com/pjsip/pjproject/commit/077b465c33f0aec05a49cd2ca456f9a1b112e896 PatchThird Party Advisory
https://github.com/pjsip/pjproject/security/advisories/GHSA-7fw8-54cv-r7pm PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html Mailing ListThird Party Advisory
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 Third Party Advisory
https://www.debian.org/security/2022/dsa-5285 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2022-21723), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.