CVE-2026-54413

Summary

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 Software

Weaknesses

• CWE-191: CWE-191 Integer Underflow (Wrap or Wraparound)
• CWE-125: CWE-125 Out-of-bounds Read

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: partial

References

• https://github.com/driftregion/iso14229
• https://github.com/driftregion/iso14229/blob/main/iso14229.c#L1447
• https://cwe.mitre.org/data/definitions/191.html
• https://cwe.mitre.org/data/definitions/125.html

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