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CVE-2020-2555

CRITICAL
9.8
CVSS Score
Published: January 15, 2020 at 04:34 PM UTC
Updated: June 17, 2026 at 03:12 AM UTC
9 products affected across 1 vendorWebcenter PortalCoherenceCommunications Diameter Signaling Router

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Severity
CRITICAL9.8
Exploitation
CISA KEV
Exploit prediction
EPSS 97%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score97.1%

EPSS (Exploit Prediction Scoring System) estimates a 97.1% chance this CVE is exploited in the wild within the next 30 days — higher than 100% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

Multiple Oracle products contain a remote code execution vulnerability that allows an unauthenticated attacker with network access via T3 or HTTP to takeover the affected system. Impacted Oracle products: Oracle Coherence in Fusion Middleware, Oracle Utilities Framework, Oracle Retail Assortment Planning, Oracle Commerce, Oracle Communications Diameter Signaling Router (DSR).

Required Action
Apply updates per vendor instructions.
Ransomware Use
Unknown
Added to KEV
Nov 3, 2021
Remediation Due
May 3, 2022
1641 days overdue
Notes
https://nvd.nist.gov/vuln/detail/CVE-2020-2555

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).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

References (9)

x_refsource_MISCExploitThird Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/157054/Oracle-Coherence-Fusion-Middleware-Remote-Code-Execution.html
x_refsource_MISCExploitThird Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/157207/Oracle-WebLogic-Server-12.2.1.4.0-Remote-Code-Execution.html
x_refsource_MISCExploitThird Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/157795/WebLogic-Server-Deserialization-Remote-Code-Execution.html
x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.oracle.com/security-alerts/cpujan2020.html
x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.oracle.com/security-alerts/cpujan2021.html
x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.oracle.com/security-alerts/cpujul2020.html
x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://www.oracle.com/security-alerts/cpujul2021.html
x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://www.oracle.com/security-alerts/cpuoct2020.html

SSVC — Action Prioritization

SSVCActiveAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.8CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-502

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