How severe is CVE-2026-21962?

CVE-2026-21962 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-21962 being actively exploited?

Yes. CVE-2026-21962 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2026-08-24, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2026-21962?

CVE-2026-21962 primarily affects Oracle Http Server. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-21962?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2026-21962 have an EU (EUVD) identifier?

Yes. CVE-2026-21962 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3550.

When was CVE-2026-21962 published?

CVE-2026-21962 was published on 2026-01-20 and last updated on 2026-08-25.

CVE-2026-21962

CVE-2026-21962 is a critical-severity vulnerability in Oracle Http Server with a CVSS 3.x base score of 10.0. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2026-08-24). The underlying weakness is classified as CWE-284.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 73% (99th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2026-08-24)
EU (EUVD) id: EUVD-2026-3550
Weakness: CWE-284
Affected product: Oracle Http Server
Published: 2026-01-20
Last modified: 2026-08-25

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).

Frequently asked questions

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).
How severe is CVE-2026-21962?: CVE-2026-21962 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-21962 being actively exploited?: Yes. CVE-2026-21962 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2026-08-24, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2026-21962?: CVE-2026-21962 primarily affects Oracle Http Server. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-21962?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2026-21962 have an EU (EUVD) identifier?: Yes. CVE-2026-21962 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3550.
When was CVE-2026-21962 published?: CVE-2026-21962 was published on 2026-01-20 and last updated on 2026-08-25.

References

Affected products (6)

cpe:2.3:a:oracle:http_server:12.2.1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:http_server:14.1.1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:http_server:14.1.2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:weblogic_server_proxy_plug-in:12.2.1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:weblogic_server_proxy_plug-in:14.1.1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:weblogic_server_proxy_plug-in:14.1.2.0.0:*:*:*:*:*:*:*

More vulnerabilities in Oracle Http Server

CVE-2026-60365 — Critical (CVSS 10.0): Vulnerability in the Oracle Weblogic Server Proxy Plug-in product of Oracle Fusion Middleware (component: WebLogic…
CVE-2010-0425 — Critical (CVSS 10.0): modules/arch/win32/mod_isapi.c in mod_isapi in the Apache HTTP Server 2.0.37 through 2.0.63, 2.2.0 through 2.2.14, and…
CVE-2006-5354 — Critical (CVSS 10.0): Unspecified vulnerability in Oracle HTTP Server 9.2.0.7 and 10.1.0.5, Application Server 9.0.4.3, 10.1.2.0.2,…
CVE-2006-5348 — Critical (CVSS 10.0): Unspecified vulnerability in Oracle HTTP Server 9.2.0.7, Oracle Collaboration Suite 9.0.4.2, and Oracle E-Business…
CVE-2006-5349 — Critical (CVSS 10.0): Unspecified vulnerability in Oracle HTTP Server 9.2.0.7, when running on HP Tru64 UNIX, has unknown impact and remote…
CVE-2006-5347 — Critical (CVSS 10.0): Unspecified vulnerability in Oracle HTTP Server 9.2.0.7 and Oracle Collaboration Suite 9.0.4.2 has unknown impact and…

All CVEs affecting Oracle Http Server →

Other CWE-284 (Improper Access Control) vulnerabilities

CVE-2026-83944 — Critical (CVSS 10.0): Improper access control in Azure Logic Apps allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-20192 — Critical (CVSS 10.0): As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Identity Services Engine…
CVE-2026-87230 — Critical (CVSS 10.0): Vulnerability in the Oracle Hyperion Financial Management product of Oracle Hyperion (component: Security). The…
CVE-2026-54745 — Critical (CVSS 10.0): Kubeflow Pipelines enables users to build and deploy portable, scalable machine learning workflows. Prior to 2.17.0,…
CVE-2026-18886 — Critical (CVSS 10.0): ServiceNow has remediated an improper access control vulnerability that was identified in the ServiceNow AI platform.…
CVE-2026-76607 — Critical (CVSS 10.0): Joomla Extension - fabrikar.com - Missing ACL check in download element in Fabrik < 4.7.2.

Browse all CWE-284 (Improper Access Control) vulnerabilities →