How severe is CVE-2026-21962?

CVE-2026-21962 has a CVSS score of 10/10, rated CRITICAL. Immediate patching is strongly recommended.

Which products are affected by CVE-2026-21962?

CVE-2026-21962 affects the following products: oracle http server, oracle weblogic server proxy plug-in.

How do I patch CVE-2026-21962?

No patch has shipped for CVE-2026-21962 yet — track the oracle http server advisory for a fixed release and apply the workarounds below in the meantime.

How do I detect CVE-2026-21962 across my infrastructure?

Inventory every oracle http server deployment and check each version against the affected-products list above.

How do I mitigate CVE-2026-21962 if there is no patch (or I can't update yet)?

Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

Is CVE-2026-21962 actively exploited in the wild?

Yes. There are 5 known exploit references for CVE-2026-21962, including . All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2026-21962?

CVE-2026-21962 has an EPSS (Exploit Prediction Scoring System) score of 73.2%, placing it in the 99th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2026-21962 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2026-21962 (Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in Improper Access Control Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2026-08-24. CISA required all US federal civilian agencies to remediate this vulnerability by 2026-08-27. The required action was: 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. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2026-21962?

CVE-2026-21962 is classified as CWE-284 (CWE-284). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Which products and versions are affected by CVE-2026-21962?

CVE-2026-21962 affects oracle http server (3 versions, e.g. 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0); oracle weblogic server proxy plug-in (3 versions, e.g. 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0). Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2026-21962 published, and has it been updated?

CVE-2026-21962 was published on January 20, 2026 and was last updated on August 25, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🛡️

CISA KEV · ACTIVELY EXPLOITED

CRITICAL severity

CVE-2026-21962 — Http Server

CRITICAL

CVE-2026-21962 is a critical-severity (CVSS 10) CWE-284 vulnerability in oracle http server. It is in CISA's Known Exploited Vulnerabilities catalog (added 2026-08-24) — treat it as actively exploited and patch now. No vendor fix is recorded yet; mitigation options are listed below.

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…

Published

Jan 20, 2026

Updated

Aug 25, 2026

Affected

2 products

Patched

See advisory

Exploits

5 known

Exploitation data as of Oct 7, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2026-08-24. Federal agencies were required to remediate by 2026-08-27.
CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2026-21962.

EPSS Exploitation Probability

via FIRST.org ↗

73.2%probability of exploitation in next 30 days

Very High Risk+2.28%

Lower risk than most CVEs99th percentile — riskier than 99% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2026-21962 by exploitation likelihood (EPSS) against impact (CVSS). In the shaded patch-first corner (EPSS 50%+, CVSS 7.0+).

Where this sits among everything scored

Of 384,534 CVEs with a current EPSS score, this one falls in the 50–90% band (highlighted). Counts from FIRST.org, log-scaled.

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).

Affected Products

2 products · 6 configurations

Application

http serveroracle

3 versions

12.2.1.4.014.1.1.0.014.1.2.0.0

Application

weblogic server proxy plug-inoracle

3 versions

12.2.1.4.014.1.1.0.014.1.2.0.0

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

boroeurnprach/Ashwesker-CVE-2026-21962

CVE-2026-21962

⭐ 6🍴 8Sep 2026

samael0x4/CVE-2026-21962

Unauthenticated vulnerability that may allow remote attackers to comprom

⭐ 6🍴 3Aug 2026

gregk4sec/cve-2026-21962

⭐ 4🍴 0Aug 2026

zeetee1235/CVE-2026-21962

⭐ 3🍴 1Aug 2026

George0Papasotiriou/CVE-2026-21962-Oracle-HTTP-Server-WebLogic-Proxy-Plug-in-Critical-

Oracle Fusion Middleware Oracle HTTP Server / WebLogic Server Proxy Plug

⭐ 3🍴 0Apr 2026

Detection & mitigation playbook

Vendor / appliance

Detect
Inventory every oracle http server deployment and check each version against the affected-products list above.
Remediation status
No patch has shipped for CVE-2026-21962 yet — track the oracle http server advisory for a fixed release and apply the workarounds below in the meantime.
Mitigate without a patch
Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

Frequently Asked Questions

O3 Security · Runtime Protection

Is CVE-2026-21962 being exploited in your environment?

Detect and block the exploit chain at execution, on systems you cannot patch yet.

Protect my workloads How runtime protection works

CVSS Score

10/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Raw vector

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

CWE Classification

CWE-284CWE-284

Weaponization

No known public exploit tooling found.

Timeline

Disclosed

Jan 20, 2026

KEV added

Aug 24, 2026

Last updated

Aug 25, 2026

Identifiers

CVE-2026-21962

References

Fixoracle.com Reportweb.archive.org Webgithub.com Webcisa.gov Webx.com

Related vulnerabilities

This CVE is critical severity — higher than any of the other 8 CVEs with CWE-284 (highest there: high).

CVE-2026-58197CVE-2026-61700CVE-2026-46696CVE-2026-65915CVE-2026-55621CVE-2026-55548CVE-2026-55622CVE-2026-55678Browse all CWE-284

Provenance

Sources

OSV.devNVDCISA KEVFIRST.org (EPSS)

Last verifiedAug 25, 2026

CVE-2026-21962 — Http Server

Exploitation Status

Actively exploited in the wild

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Description

Affected Products

Detection & mitigation playbook

Detect

Remediation status

Mitigate without a patch

Frequently Asked Questions

Is CVE-2026-21962 being exploited in your environment?