CVE-2026-25994 PJSIP has a heap buffer overflow in ICE with long username
A heap buffer overflow in PJSIP's ICE session allows attackers to execute arbitrary code or cause denial of service via long usernames.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-25994?
CVE-2026-25994 is a high-severity memory corruption vulnerability in pjsip pjproject, published on 11 Feb 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. In 2.16 and earlier, a buffer overflow vulnerability exists in PJNATH ICE Session when processing credentials with excessively long usernames.
Weakness: CWE-120
Which versions are affected by CVE-2026-25994?
It affects 1 product.
Products include Pjsip Pjsip.
How do I fix CVE-2026-25994?
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-2026-25994 being exploited?
There is no known exploitation of CVE-2026-25994 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry and 1 proofs of concept on GitHub.
Other vulnerabilities in pjsip pjproject
- CVE-2026-28799 PJSIP: Heap use-after-free in PJSIP presence subscription termination handler
- CVE-2026-29068 PJSIP: Stack buffer overflow in Opus codec parser
- 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()
Sources
Also known as ALPINE-CVE-2026-25994, DEBIAN-CVE-2026-25994, GHSA-j29p-pvh2-pvqp, UBUNTU-CVE-2026-25994.