CVE-2021-2109
HighExploitedPublic exploitEasily exploitable vulnerability allows high privileged attacker with network access via HTTP to compromise Oracle WebLogic Server.
Published Jan 25, 2021 · Updated Sep 26, 2024 · Also known as TR-21-0065
Key Facts
Patch immediately- CVE-2021-2109 is a high-severity vulnerability (CVSS 7.2 v3.1) affecting WebLogic Server (Oracle).
- It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Aug 15, 2026. Public exploit code is available.
- EPSS estimates a 70% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
7.2
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
70%
Higher than 99.3% of all scored CVEs
Exploited in the wild
Yes
2 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
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Description
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Console). Supported versions that are affected are 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0 and 14.1.1.0.0. Easily exploitable vulnerability allows high privileged attacker with network access via HTTP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.1 Base Score 7.2 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Aug 15, 2026 | n/a | Not reported |
| CIRCL KEV | Aug 15, 2026 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
6 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| WebLogic ServerOracle | 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, 14.1.1.0.0, >= 10.3.6.0.0 | n/a |
Timeline
Publicly disclosed
Jan 25, 2021
Last updated
Sep 26, 2024
Added to Industry KEV feed
Aug 15, 2026
Added to CIRCL KEV
Aug 15, 2026
References
- advisoryhttps://cxsecurity.com/issue/WLB-2021010172
- advisoryhttps://www.oracle.com/security-alerts/cpujan2021.html
- advisoryUSOM advisory
- exploithttp://packetstormsecurity.com/files/161053/Oracle-WebLogic-Server-14.1.1.0-Remote-Code-Execution.html
- exploitVulnCheck exploitation report
FAQ
Common Questions.
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Console).
Affected: WebLogic Server (Oracle) versions 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, 14.1.1.0.0, >= 10.3.6.0.0. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Aug 15, 2026.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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