CVE-2025-21535: Oracle WebLogic Server · Missing Authentication
Affects Oracle WebLogic ServerSource CVE Database V5
Not known to be exploited · CVSS 9.8 Critical.
Data as of 26 Oct 2026, 11:42 UTC
- EPSS
- 0.8% chance of exploitation in 30 days – higher than 57% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 21 Jan 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Mavencom.oracle.weblogic/weblogic-serverpkg:maven/com.oracle.weblogic/weblogic-serverOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
- Immediately identify and inventory all Oracle WebLogic Server instances running versions 12.2.1.4.0 and 14.1.1.0.0 within the environment.
- Restrict network access to WebLogic Server’s T3 and IIOP ports to trusted internal hosts only, using firewalls, network segmentation, or access control lists to minimize exposure.
- Monitor network traffic for unusual activity on T3 and IIOP protocols, employing intrusion detection/prevention systems with updated signatures.
- Apply Oracle’s security advisories and patches as soon as they become available; subscribe to Oracle security notifications to stay informed.
- Implement WebLogic Server hardening best practices, including disabling unused protocols and services, enforcing least privilege, and enabling logging and alerting for suspicious activities.
- Consider deploying Web Application Firewalls (WAFs) or network-level proxies that can detect and block exploit attempts targeting this vulnerability.
- Conduct regular vulnerability scans and penetration tests focusing on WebLogic Server to identify residual risks.
- Prepare incident response plans specific to WebLogic compromise scenarios to enable rapid containment and recovery.
Description
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.4.0 and 14.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3, IIOP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).