CVE-2026-54413
iso14229 Integer Underflow and Out-of-Bounds Read in Handle_0x27_SecurityAccess()
- State
- Published
- Severity
- 7.8 High
- Published
- Jun 14, 2026
- Updated
- Aug 10, 2026
- Reserved
- Jun 13, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.8 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/AU:Y/V:D | TuranSec |
| 3.1 | 8.2 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H | TuranSec |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
iso14229driftregion |
|
References
- driftregion/iso14229 - upstream repositoryproduct
- Vulnerable Handle_0x27_SecurityAccess() in iso14229.cproduct
- CWE-191: Integer Underflow (Wrap or Wraparound)technical-description
- CWE-125: Out-of-bounds Readtechnical-description
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