CVE-2026-57159 (GCVE-0-2026-57159)

Vulnerability from cvelistv5 – Published: 2026-09-04 17:11 – Updated: 2026-09-08 17:36
VLAI
Title
PJSIP: SDP parser out-of-bounds write in remote payload-type map maintenance
Summary
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.
Severity
8.4 (High)
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
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 17:35 UTC
CWE
  • CWE-129 - Improper Validation of Array Index
  • CWE-787 - Out-of-bounds Write
Assigner
References
Impacted products
Vendor Product Version
pjsip pjproject Affected: < 673b978aab1fe3ab874247be32c871acc880cbeb
Create a notification for this product.
Show details on NVD website
To clipboard 

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