OpenJDK-21-crac-jdk is an OpenJDK 21-based Java Development Kit variant used within Ubuntu environments.
Openjdk-21-crac-jdk is a technology platform tracked across 2 threat clusters and 1 intelligence report mention on ThreatCluster. First observed December 2, 2025; most recent activity December 2, 2025.
OpenJDK-21-crac-jdk is an OpenJDK 21-based Java Development Kit variant used within Ubuntu environments. A recent Ubuntu security advisory (USN-7901-1) tied to CVE-2025 indicates a critical vulnerability affecting this JDK, with a security fix deployed, underscoring the importance of timely patching to protect Java runtimes from exploitation.
Several critical security vulnerabilities were identified in various versions of OpenJDK, affecting Ubuntu 25.10 and its derivatives. The issues include improper handling of encoded strings and XML External Entity (XEE)…
OpenJDK versions 21 and 25 have been found to contain vulnerabilities that allow unauthenticated remote attackers to potentially modify files or leak sensitive information. The issues were discovered in the Security…
OpenJDK-21-crac-jdk is an OpenJDK 21-based Java Development Kit variant used within Ubuntu environments.
The most recent intelligence report mentioning Openjdk-21-crac-jdk on ThreatCluster is dated December 2, 2025.
Across ThreatCluster reporting, Openjdk-21-crac-jdk most frequently co-occurs with Zero-day Exploit, CVE-2025-53057, CVE-2025-53066, CVE-2025-61748, Openjdk-21-crac, among 12 tracked related entities.
The most significant recent cluster is “Multiple OpenJDK Vulnerabilities Discovered in Ubuntu 25.10 and Derivatives” (11 articles · Updated December 2, 2025). Openjdk-21-crac-jdk appears across 2 threat clusters in total, listed above with sources.
Openjdk-21-crac-jdk appears in 1 intelligence report mention across 2 deduplicated threat clusters, aggregated from 17,000+ monitored sources.