CVE-2022-23537

Name: CVE-2022-23537
Creator: NVD / NIST
Published: 2022-12-20T19:15:24.663+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.03%

Last modified Jun 17, 2026

CVE-2022-23537 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. Buffer overread is possible when parsing a specially crafted STUN message with unknown attribute. EPSS estimates a 1.03% chance of exploitation in the next 30 days.

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. Buffer overread is possible when parsing a specially crafted STUN message with unknown attribute. The vulnerability affects applications that uses STUN including PJNATH and PJSUA-LIB. The patch is available as a commit in the master branch (2.13.1).

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.03%

59.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Teluu	Pjsip	< 2.13.1
Debian	Debian Linux	10.0

References

https://github.com/pjsip/pjproject/commit/d8440f4d711a654b511f50f79c0445b26f9dd1e1Patch, Third Party Advisory
https://github.com/pjsip/pjproject/security/advisories/GHSA-9pfh-r8x4-w26wPatch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/08/msg00038.htmlMailing List, Third Party Advisory
https://github.com/pjsip/pjproject/commit/d8440f4d711a654b511f50f79c0445b26f9dd1e1Patch, Third Party Advisory
https://github.com/pjsip/pjproject/security/advisories/GHSA-9pfh-r8x4-w26wPatch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/08/msg00038.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/09/msg00030.html

Timeline

Published: Dec 20, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-23537?

How severe is CVE-2022-23537?

CVE-2022-23537 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.03% probability of exploitation in the next 30 days.

How do I fix CVE-2022-23537?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-23537?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST