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CVE-2026-57159: CWE-129: Improper Validation of Array Index in pjsip pjproject

0
High
VulnerabilityCVE-2026-57159cvecve-2026-57159cwe-129cwe-787
Published: 09/04/2026 (09/04/2026, 17:11:26 UTC)
Source: CVE Database V5
Vendor/Project: pjsip
Product: pjproject

Description

PJSIP is a free and open source multimedia communication library written in C. Prior to commit 673b978, a remote out-of-bounds read and write can occur in the SDP negotiator when the remote payload-type map maintenance feature is enabled. assign_pt_and_update_map() in pjmedia/src/pjmedia/sdp_neg.c uses payload-type numbers taken from a remote SDP offer or answer to index fixed-size internal tables without sufficient bounds validation, so a crafted remote SDP can cause memory access outside those tables. The practical impact is memory corruption and denial of service; code execution is not demonstrated. This path is only reached when PJMEDIA_SDP_NEG_MAINTAIN_REMOTE_PT_MAP is enabled. The default is disabled, so default builds are not affected; the feature is an interoperability option that integrating products may enable. This issue has been patched via commit 673b978.

CVSS v4.0

Score 8.4high

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
None
User Interaction
None
Vuln. Confidentiality
Low
Vuln. Integrity
High
Vuln. Availability
High
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N

Technical Details

Data Version
5.2
Assigner Short Name
GitHub_M
Date Reserved
2026-06-24T01:45:48.698Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a9afe70acd9273b49f0e668

Added to database: 09/04/2026, 17:22:56 UTC

Last updated: 09/05/2026, 03:16:50 UTC

Views: 11

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