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

EPSS43% · 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

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
2026-08-27CISA 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 patch from GitHub
Review recent authentication logs for anomalous access patterns
Verify repository access controls and permissions
Consider rotating authentication tokens and API keys

References

Referenced in our briefings & reports

Vulnerability Priority Report – Week 4 of August 2026 (August 24 – 30)

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🤖 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.