CVE-2026-54413 iso14229 Integer Underflow and Out-of-Bounds Read in Handle_0x27_SecurityAccess()
A remote unauthenticated attacker can crash a UDS server or read memory by sending a malformed SecurityAccess request to the iso14229 library.
- 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-2026-54413?
CVE-2026-54413 is a high-severity vulnerability in driftregion iso14229, published on 14 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
driftregion iso14229 through 0.9.0 contains an integer underflow and downstream out-of-bounds read in the Handle_0x27_SecurityAccess function in iso14229.c that allows a remote unauthenticated attacker to crash a UDS server and potentially read memory past the receive buffer by sending a single-byte 0x27 SecurityAccess request that follows any earlier well-formed 0x27 message.
Which versions are affected by CVE-2026-54413?
How do I fix CVE-2026-54413?
No fix has been published for CVE-2026-54413 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-54413 being exploited?
There is no known exploitation of CVE-2026-54413 in the wild and no public exploit code.
Sources
Also known as GHSA-36r7-c6f4-gj9g.