CVE-2026-21962: Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in Improper Access Control Vulnerability
Vulnerability summary
CVE-2026-21962 is a critical (CVSS 10.0) Improper Access Control vulnerability in Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in. It is known to be exploited: CISA lists it, first on 24-08-2026. EPSS estimates a 73.19% chance of exploitation in the next 30 days, higher than 99.4% of scored vulnerabilities.
Timeline
- 20-01-2026PublishedVulnerability first disclosed.
- 24-08-2026Added to CISA KEVOracle HTTP Server and Oracle Weblogic Server Proxy Plug-in Improper Access Control Vulnerability
- 25-08-2026Last modifiedVulnerability information updated.
- 27-08-2026CISA remediation dueApply mitigations per vendor instructions.
Description
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).
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST10.0CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
EPSS trend
Probability
73.19%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
+30.72 pp
From 42.48% on 19-09-2026
Known exploited
Compare KEV catalogs- Added
- 24-08-2026
- Federal due date
- 27-08-2026
CISA required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. www.oracle.com/security-alerts/cpujan2026.html nvd.nist.gov/vuln/detail/CVE-2026-21962
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Oracle2 products
- http_server12.2.1.4.0 | 14.1.1.0.0 | 14.1.2.0.0
- weblogic_server_proxy_plug-in12.2.1.4.0 | 14.1.1.0.0 | 14.1.2.0.0
Oracle corporation1 product
- oracle http server, oracle weblogic server proxy plug-in12.2.1.4.0 | 14.1.1.0.0 | 14.1.2.0.0
2 vendors · 3 products
References
5 links- x.com/0xacb/status/2015473216844620280Not Applicable
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-21962Government ResourceUS Government Resource