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Vulnerability record · CVE-2022-31031 · published 9 June 2022

CVE-2022-31031: Teluu pjsip classic buffer overflow 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 prior to and including 2.12.1 a stack buffer overflow vulnerability affects PJSIP users that use STUN in their applications, either by: setting a STUN server in their account/media config in PJSUA/PJSUA2 level, or directly using `pjlib-util/stun_simple` API. A patch is available in commit 450baca which should be included in the next release. There are no known workarounds for this issue.

9.8 CVSS 3.1 Critical EPSS 2.0% · top 20.1% CWE-120 · Classic buffer overflowCWE-787 · Out-of-bounds write
9.8CVSS 3.1 base score, v2 6.8
2.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
13References
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 prior to and including 2.12.1 a stack buffer overflow vulnerability affects PJSIP users that use STUN in their applications, either by: setting a STUN server in their account/media config in PJSUA/PJSUA2 level, or directly using `pjlib-util/stun_simple` API. A patch is available in commit 450baca which should be included in the next release. There are no known workarounds for this issue.

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

Affected products

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

References

LinkTags
https://github.com/pjsip/pjproject/commit/450baca94f475345542c6953832650c390889202 PatchThird Party Advisory
https://github.com/pjsip/pjproject/security/advisories/GHSA-26j7-ww69-c4qj PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/02/msg00029.html Mailing List
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/2023/dsa-5358 Third Party Advisory
https://github.com/pjsip/pjproject/commit/450baca94f475345542c6953832650c390889202 PatchThird Party Advisory
https://github.com/pjsip/pjproject/security/advisories/GHSA-26j7-ww69-c4qj PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/02/msg00029.html Mailing List
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/2023/dsa-5358 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2022-31031), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.