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ExploitedIn CISA KEVFix available

CVE-2020-2883

Exploitation confirmed. First attested on 2025-01-07 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2020-04-15

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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).

Timeline

dates in UTC
  1. 2020-04-1514:15CVE publishedNVD
  2. 2025-01-07Added to the CISA KEV catalogCISA KEV
  3. 2025-01-07Listed as exploited by GCVEGCVE
  4. 2025-01-07Exploitation first reportedCISA KEV
  5. 2025-01-1104:55SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-2883?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-2883?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Oracle weblogic server
BranchAffectedFixed in
10.3= 10.3.6.0.0no fix published
12.1= 12.1.3.0.0no fix published
12.2= 12.2.1.3.0no fix published
12.2= 12.2.1.4.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As oracle, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Oracle Corporation WebLogic Server
    Affected
    • = 10.3.6.0.0no fix stated
    • = 12.1.3.0.0no fix stated
    • = 12.2.1.3.0no fix stated
    • = 12.2.1.4.0no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2020-06-04

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • ICSA-25-261-05 CISA1 known affected

    Remote Code Execution Vulnerability in Hitachi Energy Service Suite Product

    Service Suite versions prior to 9.6.0.4 EP4

Full record on NVD

Fix

  1. CISA’s required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.due 2025-01-28
  2. Vendor fix CISA ICSA-25-261-05 · 1 productUpdate to version 9.8.2 or latest - Hitachi Energy recommends that customers apply the update at the earliest convenience - While reviewing the recommended immediate actions, assess the risk exposure of affected products within the operational environment and update or upgrade if necessary
  3. Mitigation from the vendor CISA ICSA-25-261-05 · 1 productApply general Mitigation Factors

Advisories and patches

Detection

read 2026-11-03 22:42 UTC
Nuclei template
available
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
7 repositories, unverifiedY4er/CVE-2020-2883MagicZer0/Weblogic_CVE-2020-2883_POCZZZWD/CVE-2020-2883Y4er/WebLogic-Shiro-shellFancyDoesSecurity/CVE-2020-2883
PoC-in-GitHub
Metasploit modules
1 moduleexploit/multi/misc/weblogic_deserialize_badattr_extcomprank: normalModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2025-01-07
Patch Due Date
2025-01-28
Ransomware Use
Unknown
Required Action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2020-04-15
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-9x8q-p3qp-r24w

Frequently asked questions

What is CVE-2020-2883?

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).

Is CVE-2020-2883 actively exploited?

Yes. CVE-2020-2883 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2025-01-28.

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

CVE-2020-2883 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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