# Oracle WebLogic Server: WebLogic Server Unspecified Vulnerability · pwn.watch

> Oracle WebLogic Server, a product within the Fusion Middleware suite, contains an unspecified vulnerability exploitable by an unauthenticated attacker with network access via IIOP or T3. Added to CISA KEV on 2025-01-07.

Page: https://pwn.watch/i/oracle-weblogic-server-cve-2020-2883 · generated 2026-10-23T04:59:28.006Z

## Status
- Severity: critical · status: closed · patch: patched
- Product: Oracle WebLogic Server
- Started: 2025-01-07 · closed: 2025-01-07
- CVEs: CVE-2020-2883
- Affected: See vendor advisory / CISA notes (versions not always listed in KEV feed)
- Fixed in: See vendor advisory linked in sources

## Follow this incident
- RSS (one item per update): https://pwn.watch/i/oracle-weblogic-server-cve-2020-2883/feed.xml
- JSON Feed: https://pwn.watch/i/oracle-weblogic-server-cve-2020-2883/feed.json
- Full data (timeline, sources, posts, agentBrief): https://pwn.watch/i/oracle-weblogic-server-cve-2020-2883.json
- This file: https://pwn.watch/i/oracle-weblogic-server-cve-2020-2883/llms.txt

## Updates (newest first)
- 2025-01-07: CISA added CVE-2020-2883 to the KEV catalog (due 2025-01-28).

## Fix brief
# Security brief: Oracle WebLogic Server: WebLogic Server Unspecified Vulnerability

Source: https://pwn.watch/i/oracle-weblogic-server-cve-2020-2883 · status: closed (closed Jan 7, 2025) · severity: critical · updated Jan 7, 2025

## Patch status
**PATCHED: fixed releases exist. Upgrade to a fixed version.**

## What it is
Oracle WebLogic Server, a product within the Fusion Middleware suite, contains an unspecified vulnerability exploitable by an unauthenticated attacker with network access via IIOP or T3. Added to CISA KEV on 2025-01-07.

Severity detail: CVSS 9.8 (CNA, v3.0); actively exploited (CISA KEV)

- Product: Oracle WebLogic Server
- CVE / advisory ids: CVE-2020-2883

## Affected versions
- See vendor advisory / CISA notes (versions not always listed in KEV feed)

## Check whether you're affected
No generic command applies (the product is a hosted service, appliance or desktop app). Check the installed version in its admin UI / About screen and compare with the versions above.

## Fix
Upgrade to one of these fixed versions (or later on the same branch):
- See vendor advisory linked in sources

After upgrading, re-run the checks above and redeploy/restart the affected services.

## Latest updates
- Jan 7, 2025: CISA added CVE-2020-2883 to the KEV catalog (due 2025-01-28).

## Advisories
- [Oracle advisory: Oracle WebLogic Server](https://www.oracle.com/security-alerts/cpuapr2020.html) (Oracle)
- [NVD: CVE-2020-2883](https://nvd.nist.gov/vuln/detail/CVE-2020-2883) (NVD)
- [CISA Known Exploited Vulnerabilities Catalog](https://www.cisa.gov/known-exploited-vulnerabilities-catalog) (CISA)

## Caveats
Derived from CISA KEV JSON feed catalogVersion 2026.10.21. CVSS from the CVE record (cvelistV5). Exact affected/fixed version strings are not always in the KEV record; verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier; many entries are older CVEs newly confirmed as exploited in 2025).

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Machine-readable: https://pwn.watch/i/oracle-weblogic-server-cve-2020-2883.json · all incidents: https://pwn.watch/incidents.json. Verify against the vendor advisory before changing production systems.