The cybersecurity agency CISA has instructed government organizations to immediately patch a critical vulnerability that has been widely exploited in attacks against Oracle WebLogic servers.
The remote code execution flaw, identified as CVE-2026-21962 with a CVSS score of 10, affects Oracle HTTP Server and the WebLogic Server Proxy plugin, which bridges HTTP Server to WebLogic.
The security hole can be exploited without authentication to hack affected servers. Oracle patched the vulnerability with its January 2026 updates.
CISA added CVE-2026-21962 to its Known Exploited Vulnerabilities (KEV) catalog on August 24 and instructed federal agencies to address it by August 27.
[ Read: CISA Tells Federal Agencies to Prioritize Patches Based on Risk ]
