CVE-2010-0634: Will Estes Flex

High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days.

Unspecified vulnerability in Fast Lexical Analyzer Generator (flex) before 2.5.35 has unknown impact and attack vectors.

Affected products

• Will Estes Flex: up to and including 2.5.34; version 2.5.4a only; version 2.5.27 only; version 2.5.31 only; version 2.5.33 only

Published 2010-02-12. Last modified 2026-06-16.