Exploited vulnerabilities / CVE-2026-21962
Confirmed exploited · exploited vulnerability · HTTP Server and Oracle Weblogic Server Proxy Plug-inCVE-2026-21962
HTTP Server and Oracle Weblogic Server Proxy Plug-in exploited vulnerability, confirmed exploited in the wild.
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.
| CISA's name for it | Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in Improper Access Control Vulnerability |
|---|---|
| Vendor and product | Oracle · HTTP Server and Oracle Weblogic Server Proxy Plug-in |
| Type | exploited vulnerability · CWE-284 |
| Exploited | Confirmed by CISA listed 24 August 2026 |
| Likelihood | one of the most likely to be exploited of every vulnerability tracked |
| Deadline | 27 August 2026 · already passed |
| Used in ransomware | Not reported |
| Advisories | www.oracle.com ↗ · www.cisa.gov ↗ · www.cisa.gov ↗ · nvd.nist.gov ↗ |
Three steps, in this order
Apply the vendor's fix or mitigation; CISA lists only vulnerabilities seen exploited.
If you cannot patch now, restrict network access to the affected product.
Check for signs of compromise since the date it was added to the list.
| CISA's 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. |
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Know before someone else finds it
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CVE-2026-21962 in short
Is CVE-2026-21962 being exploited?
Yes. CISA added CVE-2026-21962 to its Known Exploited Vulnerabilities catalogue on 24 August 2026, which it does only on evidence of exploitation in the wild.
What is the CISA deadline for CVE-2026-21962?
US federal agencies must remediate it by 27 August 2026. Everyone else should treat that date as the latest safe point to patch an internet-facing system.
How likely is CVE-2026-21962 to be exploited in the next 30 days?
FIRST's Exploit Prediction Scoring System gives it 73%, the 99th percentile of every CVE it scores.
How do I fix CVE-2026-21962?
Apply the vendor's fix or mitigation; CISA lists only vulnerabilities seen exploited. If you cannot patch now, restrict network access to the affected product. Check for signs of compromise since the date it was added to the list.
Other Oracle vulnerabilities being exploited
| CVE | Product | Type | Listed |
|---|---|---|---|
| CVE-2026-46817 | E-Business Suite | privilege escalation | 15 July 2026 |
| CVE-2026-35273 | PeopleSoft Enterprise PeopleTools | authentication bypass | 12 June 2026 |
| CVE-2024-21182 | WebLogic Server | exploited vulnerability | 1 June 2026 |
| CVE-2025-61757 | Fusion Middleware | authentication bypass | 21 November 2025 |
Sources: CISA Known Exploited Vulnerabilities catalogue (released 10 November 2026) and FIRST EPSS. Page compiled automatically by SAK T.L.M, the threat-intelligence tool of SAK T.E.C, on 13 November 2026.