OpenJDK-21-CRAC-JDK-Headless is the headless variant of OpenJDK 21 with CRAC (Checkpoint/Restore in Userspace) support, intended for server environments that require non-GUI Java runtimes and advanced lifecycle features.
Openjdk-21-crac-jdk-headless 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-Headless is the headless variant of OpenJDK 21 with CRAC (Checkpoint/Restore in Userspace) support, intended for server environments that require non-GUI Java runtimes and advanced lifecycle features. It is significant in cybersecurity because a security fix (USN-7901-1) addressing CVE-2025 has been issued for this package in Ubuntu 25.10, reflecting active vulnerability management for Java runtimes in Linux distributions.
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-Headless is the headless variant of OpenJDK 21 with CRAC (Checkpoint/Restore in Userspace) support, intended for server environments that require non-GUI Java runtimes and advanced lifecycle features.
The most recent intelligence report mentioning Openjdk-21-crac-jdk-headless on ThreatCluster is dated December 2, 2025.
Across ThreatCluster reporting, Openjdk-21-crac-jdk-headless 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-headless appears across 2 threat clusters in total, listed above with sources.
Openjdk-21-crac-jdk-headless appears in 1 intelligence report mention across 2 deduplicated threat clusters, aggregated from 17,000+ monitored sources.