SB2026030657 - Multiple vulnerabilities in pjsip

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Use-after-free (CVE-ID: CVE-2026-28799)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in the presence subscription termination handler. A remote attacker can execute arbitrary code on the target system.

2) Stack-based buffer overflow (CVE-ID: CVE-2026-29068)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when pjmedia-codec parses an RTP payload. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• https://github.com/pjsip/pjproject/security/advisories/GHSA-8fj4-fv9f-hjpc
• https://github.com/pjsip/pjproject/security/advisories/GHSA-pqww-jrxr-457f