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CVE-2025-21535 is a critical vulnerability in the Core component of Oracle WebLogic Server affecting versions 12.2.1.4.0 and 14.1.1.0.0. The flaw is remotely exploitable by an unauthenticated attacker over the network via the T3 or IIOP protocols and has been described as a missing authentication issue. Successful exploitation can lead to full compromise of the Oracle WebLogic Server instance, consistent with remote code execution and server takeover. The vulnerability requires no privileges and no user interaction, and Oracle assigned it a CVSS v3.1 score of 9.8 with impacts to confidentiality, integrity, and availability.
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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.
A missing-authentication vulnerability in Oracle WebLogic Server tied to initial access activity attributed to a named ransomware group.
A remote code execution vulnerability via T3/IIOP in Oracle WebLogic Server.
A critical vulnerability in Oracle Fusion Middleware, exploitable remotely without privileges.
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.