How severe is CVE-2020-2883?

No CVSS score has been assigned to CVE-2020-2883 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2020-2883?

Affected package information for CVE-2020-2883 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2020-2883?

No fixed release is recorded for CVE-2020-2883 yet. Track the upstream advisory, and apply the exposure-reduction steps below in the meantime.

How do I detect CVE-2020-2883 in my code and dependencies?

Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).

How do I mitigate CVE-2020-2883 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2020-2883 actively exploited in the wild?

Yes. There are 10 known exploit references for CVE-2020-2883, including 6 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2020-2883?

CVE-2020-2883 has an EPSS (Exploit Prediction Scoring System) score of 94.6%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2020-2883 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2020-2883 (Oracle WebLogic Server Unspecified Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2025-01-07. CISA required all US federal civilian agencies to remediate this vulnerability by 2025-01-28. The required action was: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

Is there exploit tooling available for CVE-2020-2883?

2 Metasploit modules reference CVE-2020-2883, which lowers the barrier to weaponization. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was CVE-2020-2883 published, and has it been updated?

CVE-2020-2883 was published on April 15, 2020 and was last updated on January 12, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV · ACTIVELY EXPLOITED

CVE-2020-2883 — Oracle

CVE-2020-2883 is a security vulnerability. It is in CISA's Known Exploited Vulnerabilities catalog (added 2025-01-07) — treat it as actively exploited and patch now. No vendor fix is recorded yet; mitigation options are listed below.

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.…

Published

Apr 15, 2020

Updated

Jan 12, 2026

Affected

1 product

Patched

See advisory

Exploits

10 known

Exploitation data as of Oct 21, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2025-01-07. Federal agencies were required to remediate by 2025-01-28.
CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2020-2883.

EPSS Exploitation Probability

via FIRST.org ↗

94.6%probability of exploitation in next 30 days

Very High Risk-0.35%

Lower risk than most CVEs100th percentile — riskier than 100% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Description

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).

Affected Products

1 product · 4 configurations

Application

weblogic serveroracle

4 versions

10.3.6.0.012.1.3.0.012.2.1.3.012.2.1.4.0

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.