What’s Vulnerable › Vulnerabilities

CVE-2026-54413: iso14229 Integer Underflow and Out-of-Bounds Read in Handle_0x27_SecurityAccess()

• Severity: high (CVSS 8.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-14 · updated 2026-08-10
• Weakness: CWE-125

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.

Affected products

• driftregion iso14229: through 0.9.0

References

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

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