CVE-2011-0991: Mono

Medium severity, CVSS 6.8. EPSS: 2.9% chance of exploitation in the next 30 days.

Use-after-free vulnerability in Mono, when Moonlight 2.x before 2.4.1 or 3.x before 3.99.3 is used, allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to finalizing and then resurrecting a DynamicMethod instance.

Affected products

• Mono Mono: any version
• Novell Moonlight: version 2.0 only; version 2.3.0 only; version 2.4 only; version 2.31 only; version 3.0 only; version 3.99 only

Published 2011-04-13. Last modified 2026-06-16.