CVE-2026-21962 | defend.network

What is CVE-2026-21962?

Vulnerability in the Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in product of Oracle Fusion Middleware (component: Weblogic Server Proxy Plug-in for Apache HTTP Server, Weblogic Server Proxy Plug-in for IIS). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0 and 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in. While the vulnerability is in Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in accessible data as well as unauthorized access to critical data or complete access to all Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in accessible data. Note: Affected version for Weblogic Server Proxy Plug-in for IIS is 12.2.1.4.0 only. CVSS 3.1 Base Score 10.0 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N).

CVSS10 NVD 3.1

SeverityCRITICAL

Exploitation In the wild In CISA KEV

EPSS73% · P99

Triage statusActive Exploit

ActionPatch immediately

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

CWECWE-284

NVD published2026-01-20

NVD last modified2026-08-25

Timeline

2026-01-20Published to the U.S. National Vulnerability Database (NVD)
2026-08-24Added to the CISA Known Exploited Vulnerabilities (KEV) catalog
2026-08-25NVD record last updated
2026-08-26First covered in a defend.network daily briefing
2026-08-27CISA federal remediation deadline (BOD 22-01)

CISA Known Exploited Vulnerability

Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in Improper Access Control Vulnerability

Added to KEV2026-08-24

Federal patch deadline2026-08-27

Known ransomware useUnknown

Affected product

Oracle HTTP Server And Oracle Weblogic Server Proxy Plug-In

NVD also lists CPE entries for: Oracle Http Server, Oracle Weblogic Server Proxy Plug-In

Remediation Steps

Apply the vendor security update for Oracle HTTP Server And Oracle Weblogic Server Proxy Plug-In as a priority.
Restrict network exposure of the affected service to trusted sources until patched.
Review logs and detections for indicators of exploitation.
Confirm fixed versions against the official vendor advisory before deploying.

References

Referenced in our briefings & reports

Vulnerability Priority Report – Week 3 of September 2026 (September 21 – 27)
Vulnerability Priority Report – Week 2 of September 2026 (September 14 – 20)
Vulnerability Priority Report – Week 1 of September 2026 (September 7 – 13)
Vulnerability Priority Report – Week 5 of August 2026 (August 31 – September 6)
Vulnerability Priority Report – Week 4 of August 2026 (August 24 – 30)
Mirage2FA hits 4,500 orgs; Oracle Weblogic RCE, NVIDIA AI poisoning, WordPress plugin flaws (2026-08-26)

Browse all tracked CVEs in the defend.network CVE database →

🤖 This CVE page is generated by defend.network from NVD, CISA KEV, EPSS, and our verified daily briefings. Severity and exploitation data come from official sources; always verify remediation steps against the official vendor advisory before acting in production.