What is the CVSS score of CVE-2026-21962?

CVE-2026-21962 has a CVSS 3.1 base score of 10.0 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N. EPSS exploitation probability: 0.0%.

Which versions of IIS are affected by CVE-2026-21962?

CVE-2026-21962 presents critical security risk, a improper access control vulnerability rated CVSS 10.0.. A patch is available.

How to fix or mitigate CVE-2026-21962?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Vendor patch is available.

IIS CVE-2026-21962

CRITICAL

Improper Access Control (CWE-284)

2026-01-20 secalert_us@oracle.com

Oracle Apache IIS Http Server Weblogic Server Proxy Plug In

10.0

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

10.0 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

Patch released

Feb 03, 2026 - 00:16 nvd

Patch available

CVE Published

Jan 20, 2026 - 22:15 nvd

CRITICAL 10.0

DescriptionCVE.org

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).

AnalysisAI

Oracle HTTP Server and WebLogic Server Proxy Plug-in have a CVSS 10.0 access control vulnerability allowing unauthenticated network attackers to fully compromise the middleware layer.

Technical ContextAI

Oracle Fusion Middleware's HTTP Server and WebLogic Server Proxy Plug-in have a CWE-284 access control vulnerability that allows unauthenticated attackers to compromise the middleware component with no user interaction required.