$ cve CVE-2022-21723 JSON

CVE-2022-21723

9.1

CRITICAL · CVSS 3.1 · EPSS 4.4% (pctl 91)

In your normal cycle

Critical by CVSS (9.1), but no sign of active exploitation.

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.

Scoring

CVSS	9.1 (CRITICAL, v3.1)
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
EPSS	4.36% — more likely to be exploited than 91% of all CVEs
Weakness	CWE-125
On CISA KEV	no
Public exploit	none known
Published	2022-01-27
Last modified	2026-06-17

Affected (4)

Vendor	Product
asterisk	certified asterisk
debian	debian linux
sangoma	asterisk
teluu	pjsip

References

→ the Explorer · watch your stack · NVD