CVE-2026-21962: Oracle exploited

Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.

What it is

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).

Description quoted from the CVE record (assigned by oracle, published 2026-01-20).

Weakness: CWE-284 Improper Access Control

How it can be exploited

Exploitable over the network with low attack complexity needing no privileges and no user interaction. Impact: confidentiality high, integrity high, availability none. CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

CISA assessment (SSVC): CISA assesses exploitation as active. Automatable: yes. Technical impact: total.

On CISA KEV since: 2026-08-24
US federal deadline: 2026-08-27
Ransomware use: Not known

Public exploit evidence (Exploit Observer)

Also known as: BDU:2026-00664, CNNVD-202601-3152, EUVD-2026-3550, GHSA-4wp9-cf5h-v2g5

VEDAS cluster: VEDAS:GATORGLOW

Exploit Observer links 12 pieces of public exploit code or detection modules that name this CVE or one of its aliases.

Exploit code and modules (12)

Code that names this CVE. A repository can be a working exploit, a scanner, a fake or malware; read it before running anything.

Code repository: https://github.com/0xblackash/cve-2026-21962
Code repository: https://github.com/ashwesker/ashwesker-cve-2026-21962
Code repository: https://github.com/boroeurnprach/ashwesker-cve-2026-21962
Code repository: https://github.com/george0papasotiriou/cve-2026-21962-oracle-http-server-weblogic-proxy-plug-in-critical-
Code repository: https://github.com/gglessner/cve_2026_21962_scanner
Code repository: https://github.com/gregk4sec/cve-2026-21962
Code repository: https://github.com/gregk4sec/cve-2026-21962-o
Code repository: https://github.com/kaiserdesmonats/cve-2026-21962-blog
Code repository: https://github.com/naozibuhao/cve-2026-21962_java_gui_exploit_tool
Code repository: https://github.com/samael0x4/cve-2026-21962
Code repository: https://github.com/thumpbo/cve-2026-21962
Code repository: https://github.com/zeetee1235/cve-2026-21962

Research and write-ups (1)

Research or write-up: https://www.cloudsek.com/blog/honey-for-hackers-a-study-of-attacks-targeting-the-recent-cve-2026-21962-and-other-critical-weblogic-vulnerabilities-on-a-high-interactive-oracle-honeypot

Vulnerability databases and vendor advisories (5)

Catalogue entries, not exploit evidence.

Vulnerability database or vendor advisory: https://euvd.enisa.europa.eu/enisa/EUVD-2026-3550
Vulnerability database or vendor advisory: https://github.com/advisories/GHSA-4wp9-cf5h-v2g5
Vulnerability database or vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-21962
Vulnerability database or vendor advisory: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-21962
Vulnerability database or vendor advisory: https://www.cnnvd.org.cn/home/globalSearch?keyword=CNNVD-202601-3152

27 more references returned by Exploit Observer did not name this CVE or an alias, so they are left out.

VEDAS data as of 2026-11-01T17:12 UTC; fetched 2026-11-02.

Live scores

EPSS: 0.732
very likely to be attacked soon
VEDAS: 0.974
strong exploit evidence
On CISA KEV: Yes, since 2026-08-24
Detection rule: None yet

EPSS (chance of attack)

VEDAS (exploit evidence)

Thin horizontal line: the “likely” (EPSS 0.10) or “strong” (VEDAS 0.90) threshold. Shaded “no data” areas are periods when cve-scores did not publish. The vertical line is the day CISA added it to its exploited list.

VEDAS flagged this bug about 16 days before CISA confirmed attacks.

Who is affected

Product	Affected	Not affected
Oracle Corporation Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in	version 12.2.1.4.0 version 14.1.1.0.0 version 14.1.2.0.0	Not stated

Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.

Exploit Observer also maps it to: oracle http_server, oracle weblogic_server_proxy_plug-in, oracle_corp. http_server, oracle_corp. oracle_weblogic_server_proxy_plug-in.

How to fix it

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.

Vendor guidance:

Oracle Advisory (vendor-advisory)

How to detect it

There is no open VEDAS detection rule for this bug yet. It is listed on the detection gaps page if CISA has confirmed attacks.

References

Vendor advisories and patches

Oracle Advisory (vendor-advisory)

Government sources

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-21962 (government-resource)

Other references

Other databases

Where this comes from

This advisory is generated automatically by VEDAS from: CVE.org record, CISA KEV, cve-scores (EPSS and VEDAS), Exploit Observer. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.

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