CVE-2026-54413: Driftregion ISO14229

High severity, CVSS 8.2. EPSS: 0.7% chance of exploitation in the next 30 days.

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.

Affected products

• Driftregion ISO14229: up to and including 0.9.0

Published 2026-06-14. Last modified 2026-08-10.