CVE-2026-29068 PJSIP: Stack buffer overflow in Opus codec parser
A stack buffer overflow in the PJSIP Opus codec parser allows attackers to execute arbitrary code or cause denial of service via crafted RTP payloads.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-29068?
CVE-2026-29068 is a high-severity memory corruption vulnerability in pjsip pjproject, published on 6 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
PJSIP is a free and open source multimedia communication library written in C. Prior to version 2.17, there is a stack buffer overflow vulnerability when pjmedia-codec parses an RTP payload contain more frames than the caller-provided frames can hold. This issue has been patched in version 2.17.
Weakness: CWE-121
Which versions are affected by CVE-2026-29068?
It affects 1 product.
Products include Pjsip Pjsip.
How do I fix CVE-2026-29068?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-29068 being exploited?
There is no known exploitation of CVE-2026-29068 in the wild and no public exploit code.
Other vulnerabilities in pjsip pjproject
- CVE-2026-28799 PJSIP: Heap use-after-free in PJSIP presence subscription termination handler
- CVE-2026-40614 PJSIP: Heap buffer overflow in Opus codec decoding
- CVE-2026-32945 PJSIP is vulnerable to Heap-based Buffer Overflow through DNS parser
- CVE-2026-40892 PJSIP: Stack buffer overflow in pjsip_auth_create_digest2()
- CVE-2026-26967 PJSIP has a Heap-based Buffer Overflow vulnerability in its H.264 unpacketizer
Sources
Also known as ALPINE-CVE-2026-29068, DEBIAN-CVE-2026-29068, GHSA-pqww-jrxr-457f, UBUNTU-CVE-2026-29068.