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ExploitedIn CISA KEVFix available

CVE-2020-2555

Exploitation confirmed. First attested on 2021-11-03 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2020-01-15
  • WeaknessCWE-502

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 Coherence product of Oracle Fusion Middleware (component: Caching,CacheStore,Invocation). Supported versions that are affected are 3.7.1.0, 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 T3 to compromise Oracle Coherence. Successful attacks of this vulnerability can result in takeover of Oracle Coherence. 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. 2020-01-1517:15CVE publishedNVD
  2. 2020-04-14Exploit-DB entryExploit-DB
  3. 2021-11-03Added to the CISA KEV catalogCISA KEV
  4. 2021-11-03Listed as exploited by GCVEGCVE
  5. 2021-11-03Exploitation first reportedCISA KEV
  6. 2024-09-3017:02SSVC 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-2020-2555?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-2555?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Oracle utilities framework
BranchAffectedFixed in
4.3≥ 4.3.0.1.0, ≤ 4.3.0.6.0no fix published
4.2= 4.2.0.2.0no fix published
4.2= 4.2.0.3.0no fix published
4.4= 4.4.0.0.0no fix published
4.4= 4.4.0.2.0no fix published
Oracle coherence
BranchAffectedFixed in
3.7= 3.7.1.0no 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
Oracle commerce platform
BranchAffectedFixed in
11.3≥ 11.3.0, ≤ 11.3.2no fix published
11.0= 11.0.0no fix published
11.1= 11.1.0no fix published
11.2= 11.2.0no fix published

6 more products in the sources.

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

Products declared by the CNA2 products

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

  • Oracle Corporation WebCenter Portal
    Affected
    • = 12.2.1.3.0no fix stated
    • = 12.2.1.4.0no fix stated
  • Oracle Corporation Utilities Framework
    Affected
    • = 4.2.0.2.0no fix stated
    • = 4.2.0.3.0no fix stated
    • = 4.3.0.1.0-4.3.0.6.0no fix stated
    • = 4.4.0.0.0no fix stated
    • = 4.4.0.2.0no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2021-07-20

Fix

  1. CISA’s required action: Apply updates per vendor instructions.due 2022-05-03

Advisories and patches

Detection

read 2026-11-03 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-48320EDB-48508
Exploit-DB
Proof-of-concept repositories
5 repositories, unverifiedHu3sky/CVE-2020-2555wsfengfan/CVE-2020-2555Y4er/CVE-2020-2555Maskhe/cve-2020-2555Qynklee/POC_CVE-2020-2555
PoC-in-GitHub
Metasploit modules
1 moduleexploit/multi/misc/weblogic_deserialize_badattrvalrank: normalModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2021-11-03
Patch Due Date
2022-05-03
Ransomware Use
Unknown
Required Action
Apply updates per vendor instructions.

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
2020-01-15
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-gm93-pfh3-mrf3

Frequently asked questions

What is CVE-2020-2555?

Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Caching,CacheStore,Invocation). Supported versions that are affected are 3.7.1.0, 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 T3 to compromise Oracle Coherence. Successful attacks of this vulnerability can result in takeover of Oracle Coherence. 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-2020-2555 actively exploited?

Yes. CVE-2020-2555 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 2022-05-03.

What is the CVSS score for CVE-2020-2555?

CVE-2020-2555 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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Sources for this record