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CVE-2026-21962

CRITICAL 10 KNOWN EXPLOITED PoC CATALOGUED ALL-YEARS

Published 2026-01-20 · Last modified 2026-08-25 · oracle · NVD: Analyzed

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).

ACTIVELY EXPLOITED

Confirmed exploited in the wild — in CISA KEV since 2026-08-24. Patch or mitigate now.

Exploitation likelihood

73.2%chance of exploitation in 30 days · 99th percentile

● In CISA KEV (2026-08-24)● Catalogued PoC◆ SSVC: exploitation active, automatable yes

Impact if exploited

10CVSS 3.1 · CRITICAL · CNA

  • ConfidentialityHigh
  • IntegrityHigh
  • AvailabilityNone

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ✓Privileges: No account or privileges required
  • ✓User interaction: No user interaction needed
  • ✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

Public PoC or exploit resources are catalogued below.

Listed by the named source; Vulnpedia has not tested these resources.

PoC data: JSON

Resource commands

curl -s https://vulnpedia.com/cve/CVE-2026-21962/poc.jsonMachine-readable PoC index for this CVE (for automation).

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot:

Affected

Vendors Oracle Corporation Oracle

Products Oracle Http Server, Oracle Weblogic Server Proxy Plug In Http Server Weblogic Server Proxy Plug In

Weakness (CWE)

  • CWE-284: Improper Access Control

CVSS vector

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

References and research data (JSON)

Unverified PoC candidates

Catalogue matches for further research. These repositories have not been validated as working exploits.

10 candidates

Additional exploitation reports

Source-specific reports, separate from CISA KEV. Repeated observations from one source are not independent confirmations.

  • VulnCheck KEV · 2026-02-10T00:00:00Z

    Source guidance: 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.

    Source ransomware assessment: Unknown

    VulnCheck KEV · CVE-2026-21962 · Updated 2026-02-10T00:00:00Z
  • VulnCheck KEV · 2026-02-10T00:00:00ZVulnCheck KEV · CVE-2026-21962
  • VulnCheck KEV · 2026-03-25T00:00:00ZVulnCheck KEV · CVE-2026-21962
  • VulnCheck KEV · 2026-06-24T00:00:00ZVulnCheck KEV · CVE-2026-21962
  • VulnCheck KEV · 2026-07-31T00:00:00ZVulnCheck KEV · CVE-2026-21962
  • VulnCheck KEV · 2026-08-24T00:00:00ZVulnCheck KEV · CVE-2026-21962
    VulnCheck KEV · CVE-2026-21962
  • VulnCheck KEV · 2026-09-08T00:00:00ZVulnCheck KEV · CVE-2026-21962

Known Affected Software Configurations

VendorProductVersion range
OracleHttp Server12.2.1.4.0
OracleHttp Server14.1.1.0.0
OracleHttp Server14.1.2.0.0
OracleWeblogic Server Proxy Plug In12.2.1.4.0
OracleWeblogic Server Proxy Plug In14.1.1.0.0
OracleWeblogic Server Proxy Plug In14.1.2.0.0

All CVSS metrics

  • CRITICAL 10 v3.1 · CNA Primary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
  • CRITICAL 10 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

References

Patches & mitigations

Advisories

Technical & other

Sources: NVD · CVE.org · All sources and attribution · EPSS