CVE-2026-73522 COVESA Open1722 0.9.2 Stack Buffer Overflow via avtp_to_can() in acf-can-listener
Remote attackers can achieve arbitrary code execution or denial of service via stack buffer overflow in the Open1722 library by sending crafted UDP datagrams.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-73522?
CVE-2026-73522 is a high-severity memory corruption vulnerability in COVESA Open1722, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
COVESA Open1722 through 0.9.2 contains a stack buffer overflow vulnerability that allows unauthenticated remote attackers to write past the end of a fixed 15-slot stack array by sending a crafted UDP datagram containing more than 15 ACF-CAN messages. The avtp_to_can() function increments its write index without bounding it against the caller-supplied array size, and because the listener accepts datagrams from any sender matching a hardcoded unauthenticated stream ID transmitted in plaintext, attackers can corrupt adjacent stack memory to achieve arbitrary code execution or denial of service.
Weakness: CWE-121
Which versions are affected by CVE-2026-73522?
How do I fix CVE-2026-73522?
No fix has been published for CVE-2026-73522 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-73522 being exploited?
There is no known exploitation of CVE-2026-73522 in the wild and no public exploit code.
Sources
Also known as GHSA-r2g8-gx6q-pvxr.