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CVE-2024-21138 is a difficult-to-exploit vulnerability in the HotSpot component of Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition. Affected releases include Oracle Java SE 8u411, 8u411-perf, 11.0.23, 17.0.11, 21.0.3, and 22.0.1; GraalVM for JDK 17.0.11, 21.0.3, and 22.0.1; and GraalVM Enterprise Edition 20.3.14 and 21.3.10. An unauthenticated attacker may reach vulnerable HotSpot APIs through multiple network protocols, including indirectly through an application or web service that passes attacker-controlled data to those APIs. The issue also affects sandboxed Java Web Start or applet deployments that execute untrusted code while relying on the Java sandbox.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.