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CVE-2026-33069

PJSIP has an Out-of-bounds Read in SIP multipart parsing

Published: Mar 20, 2026Updated: Mar 23, 2026 Sources: CVE List NVDCWE-125
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.3%
Top 82.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

PJSIP is a free and open source multimedia communication library written in C. Versions 2.16 and below have a cascading out-of-bounds heap read in pjsip_multipart_parse(). After boundary string matching, curptr is advanced past the delimiter without verifying it has not reached the buffer end. This allows 1-2 bytes of adjacent heap memory to be read. All applications that process incoming SIP messages with multipart bodies or SDP content are potentially affected. This issue is resolved in version 2.17.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-125

Affected Products

pjprojectpjsip
Mixed
Communications / voip-telephony
pjsippjsip
Mixed
Communications / voip-telephony
pjsiposs-projectCommunicationsaka pjproject, pjmedia-video, pjsip

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://github.com/pjsip/pjproject/security/advisories/GHSA-x5pq-qrp4-fmrj
github.com
https://github.com/pjsip/pjproject/commit/f0fa32a226df5f87a9903093e5d145ebb69734db
github.com

Timeline

Published
Mar 20, 2026
Last Updated
Mar 23, 2026

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