CVE-2026-59692 Gstreamer1-plugins-bad-free: gstreamer: dtls certificate subject dn stack buffer overflow in openssl_verify_callback
A remote attacker can cause a denial of service by sending a certificate with an oversized Subject DN, triggering a stack buffer overflow in the GStreamer DTLS plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-59692?
CVE-2026-59692 is a high-severity memory corruption vulnerability in Red Hat Enterprise Linux 10, published on 9 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A stack buffer overflow vulnerability was found in GStreamer's DTLS plugin. During a DTLS handshake, the peer certificate Subject Distinguished Name is printed into a fixed-size 2048-byte stack buffer without bounds checking. A remote unauthenticated attacker can send a certificate with an oversized Subject DN that exceeds the buffer, causing a stack buffer overflow and process crash, resulting in denial of service.
Weakness: CWE-121
Which versions are affected by CVE-2026-59692?
How do I fix CVE-2026-59692?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-59692 being exploited?
There is no known exploitation of CVE-2026-59692 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-59692, ECHO-215d-21ac-ab46, GHSA-f48p-mg4r-fhww, UBUNTU-CVE-2026-59692.