CVE-2024-45237: Nicmx Fort-Validator

Critical severity, CVSS 9.8. EPSS: 0.4% chance of exploitation in the next 30 days.

An issue was discovered in Fort before 1.6.3. A malicious RPKI repository that descends from a (trusted) Trust Anchor can serve (via rsync or RRDP) a resource certificate containing a Key Usage extension composed of more than two bytes of data. Fort writes this string into a 2-byte buffer without properly sanitizing its length, leading to a buffer overflow.

Affected products

• Nicmx Fort-Validator: before 1.6.3 (fixed in 1.6.3)

Published 2024-08-24. Last modified 2026-06-17.