CVE-2011-4574: Polarssl

Critical severity, CVSS 9.8. EPSS: 1.1% chance of exploitation in the next 30 days.

PolarSSL versions prior to v1.1 use the HAVEGE random number generation algorithm. At its heart, this uses timing information based on the processor's high resolution timer (the RDTSC instruction). This instruction can be virtualized, and some virtual machine hosts have chosen to disable this instruction, returning 0s or predictable results.

Affected products

• Polarssl Polarssl: before 1.1.0 (fixed in 1.1.0)

Published 2021-10-27. Last modified 2026-06-16.