What is CVE-2022-31001?

CVE-2022-31001 is a high-severity vulnerability in Freeswitch Sofia-Sip, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2022-05-31.

How severe is CVE-2022-31001?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2022-31001 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Out-of-bounds Read in Freeswitch Sofia-Sip

CVE-2022-31001

Sofia-SIP is an open-source Session Initiation Protocol (SIP) User-Agent library. Prior to version 1.13.8, an attacker can send a message with evil sdp to FreeSWITCH, which may cause crash. This type of crash may be caused by `#define MATCH(s, m) (strncmp(s, m, n = sizeof(m) - 1) == 0)`, which will make `n` bigger and trigger out-of-bound access when `IS_NON_WS(s[n])`. Version 1.13.8 contains a patch for this issue.

Vulnerability class: Buffer Overflow

Published 2022-05-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.021 (81.3th percentile), scored 2026-09-28.

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000

Affected products

Freeswitch Sofia-Sip — versions < 1.13.8
Signalwire Sofia-Sip
Debian Linux — versions 10.0, 11.0

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

github.com/freeswitch/sofia-sip/security/advisories/GHSA-79jq-hh82-cv9g (Exploit, Third Party Advisory)
github.com/freeswitch/sofia-sip/commit/a99804b336d0e16d26ab7119d56184d2d7110a36 (Patch, Third Party Advisory)
lists.debian.org/debian-lts-announce/2022/09/msg00001.html (mailing-list, Mailing List, Third Party Advisory)
security.gentoo.org/glsa/202210-18 (vendor-advisory, Third Party Advisory)
www.debian.org/security/2023/dsa-5410 (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2022-31001?: CVE-2022-31001 is a high-severity vulnerability in Freeswitch Sofia-Sip, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2022-05-31.
How severe is CVE-2022-31001?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2022-31001 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.