CVE-2011-3521: Sun JDK

High severity, CVSS 10.0. EPSS: 3.9% chance of exploitation in the next 30 days.

Unspecified vulnerability in the Java Runtime Environment component in Oracle Java SE JDK and JRE, 7, 6 Update 27 and earlier, and 5.0 Update 31 and earlier allows remote untrusted Java Web Start applications and untrusted Java applets to affect confidentiality, integrity, and availability via unknown vectors related to Deserialization.

Affected products

• Sun JDK: version 1.7.0 only; up to and including 1.6.0; version 1.6.0 only; up to and including 1.5.0; version 1.5.0 only
• Sun JRE: version 1.7.0 only; up to and including 1.6.0; version 1.6.0 only; up to and including 1.5.0; version 1.5.0 only

Published 2011-10-19. Last modified 2026-06-16.