10

CVE-2026-21962: Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in Improper Access Control Vulnerability

CVSS: 10.0v3.1CriticalKEVAnalyzed
Published 20-01-2026Last modified 25-08-2026

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.

Overall risk
85/100
0100
Critical · default modelHow is this calculated?
CVSS score
10.0/10
010
Critical · v3.1 (CVE.org)
EPSS score
73.19%
0%100%
Critical · +30.72 pp in 30 days
KEVListedCISA
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 20-01-2026
    PublishedVulnerability first disclosed.
  2. 24-08-2026
    Added to CISA KEVOracle HTTP Server and Oracle Weblogic Server Proxy Plug-in Improper Access Control Vulnerability
  3. 25-08-2026
    Last modifiedVulnerability information updated.
  4. 27-08-2026
    CISA 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

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

19-09-202619-10-2026
EPSS score
73.19%

Known exploited

Compare KEV catalogs
CISA KEVListed
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 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Oracle2 products
Oracle corporation1 product

2 vendors · 3 products

References

5 links