Known exploited vulnerability
CVE-2020-2883
The short answer
CVE-2020-2883 affects Oracle Corporation WebLogic Server and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2025-01-07: attackers are using it, so patch it first.
What it is
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0 and 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via IIOP, T3 to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.0 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
Severity
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Jan 7, 2025
Federal due date Jan 28, 2025
EPSS, next 30 days
95%
Higher than 100% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Affected products
WebLogic Server. NVD's record lists the exact affected versions.
References
- www.oracle.com/security-alerts/cpuapr2020.html Vendor Advisory
- www.zerodayinitiative.com/advisories/ZDI-20-504/ Third Party AdvisoryVDB Entry
- www.zerodayinitiative.com/advisories/ZDI-20-570/ Third Party AdvisoryVDB Entry
- www.oracle.com/security-alerts/cpuapr2020.html Vendor Advisory
- www.zerodayinitiative.com/advisories/ZDI-20-504/ Third Party AdvisoryVDB Entry
- www.zerodayinitiative.com/advisories/ZDI-20-570/ Third Party AdvisoryVDB Entry
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-2883 US Government Resource
Questions
Is CVE-2020-2883 being exploited?
Yes. CISA added CVE-2020-2883 to its Known Exploited Vulnerabilities catalog on 2025-01-07, with a federal remediation due date of 2025-01-28.
How do I fix CVE-2020-2883?
CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
Related
Latest CVEs this week
Critical and High CVEs from the last 7 days, with KEV and EPSS.
Exploited vulnerabilities by vendor
Every vendor in CISA's KEV catalog, with its count.
Oracle exploited vulnerabilities
Everything CISA lists as exploited for Oracle.
Vulnerability watch
A briefing and a fix pull request when an advisory hits your dependencies.
Know the day a CVE lands in your code
Connect a GitHub repository and ZeusQA checks its dependencies daily, briefs each advisory and opens the fix. Three test runs free, no card.