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CVE-2020-2883

98
FAUCET Score

CVE-2020-2883 is a critical vulnerability in Oracle WebLogic Server, affecting versions 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0, and 12.2.1.4.0. This easily exploitable flaw allows unauthenticated attackers to compromise the server via IIOP or T3 network access, leading to complete takeover with a CVSS 3.0 Base Score of 9.8. The vulnerability is actively exploited in the wild, with public exploit code available (e.g., Metasploit modules) and significant community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
10.3.6.0.0CPE matchmatch criteria
cpe:2.3:a:oracle:weblogic_server:10.3.6.0.0:*:*:*:*:*:*:*
12.1.3.0.0CPE matchmatch criteria
cpe:2.3:a:oracle:weblogic_server:12.1.3.0.0:*:*:*:*:*:*:*
12.2.1.3.0CPE matchmatch criteria
cpe:2.3:a:oracle:weblogic_server:12.2.1.3.0:*:*:*:*:*:*:*
12.2.1.4.0CPE matchmatch criteria
cpe:2.3:a:oracle:weblogic_server:12.2.1.4.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
94.93%
Probability of exploitation in next 30 days
EPSS Percentile
99.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Added to KEV · Jan 7, 2025
Metasploit: WebLogic Server Deserialization RCE BadAttributeValueExpException ExtComp · Apr 30, 2020
Nuclei: CVE-2020-2883 · Oct 14, 2025
This CVE's current EPSS score of 0.9493 is in the 99th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

oraclevendor investigatingvia nvd_reference
View patch

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
packetstormsecurity.com / files/157950/WebLogic-Server-Deserialization-Remote-Code-Execution.html
Third Party AdvisoryVDB Entry
oracle.com / security-alerts/cpuapr2020.html
Vendor Advisory
zerodayinitiative.com / advisories/ZDI-20-504
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-20-570
Third Party AdvisoryVDB Entry