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cve recordhighexploited in the wild3 of 3 cataloguesexploit reported

CVE-2026-21962

Oracle · HTTP Server and Oracle Weblogic Server Proxy Plug-in · Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in Improper Access Control Vulnerability

· Added to CISA KEV
CVSS—
Severityhigh
Weakness—
EPSS73.2%99.5th percentile
Exploited3 KEV sources
Ransomware useUnknown
Federal fix dueAug 27, 2026
patch window

Called exploited 21 days after disclosure.

Measured from the CVE publication date to the earliest of 3 KEV catalogues that list it.

The life of this vulnerability

  1. CVE published
  2. First KEV listing21d
  3. Last KEV listing7mo
  4. Last sightingsame day

Gaps are compressed to equal steps. The elapsed time is printed under each.

Which catalogues call it exploited

Sources3 of 3
Listings differ by195 d
Strongest claimconfirmed

3 catalogues list it. CIRCL aggregates the others and is shown but not counted.

Public exploitation evidence

6 public reports collected from VulnCheck and CIRCL, first on Feb 10, 2026. Each links to its original source. We have not verified them.

Description

Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in contain an improper access control vulnerability that can result in unauthorized creation, deletion or modification access to critical data as well as unauthorized access to critical data or complete access to all Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in accessible data.

Required action (CISA)

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.

References

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Our coverage of CVE-2026-21962

CVE-2026-21962

CISA Warns of Exploited Oracle WebLogic Vulnerability

The Cybersecurity and Infrastructure Security Agency (CISA) has issued a warning regarding an actively exploited vulnerability in Oracle WebLogic Server. The flaw, identified as CVE-2026-21962, is reportedly being widely leveraged by various threat actors targeting WebLogic installations.

CVE-2026-21962critical

Actively Exploited Oracle WebLogic Flaw Lets Unauthenticated Attackers Access Critical Data

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added a critical security flaw affecting Oracle WebLogic Server and Oracle HTTP Server to its Known Exploited Vulnerabilities (KEV) catalog. The agency cited evidence of active exploitation for this maximum-severity vulnerability.