CVE-2020-2555

Exp

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).

Published: 2020-01-15 Last update: 2025-10-27 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-2555 is rated Critical Active Threat (99.6/100): CVSS Critical severity, with high exploitation likelihood (EPSS 93.14%, 100th percentile). CISA KEV confirms active exploitation (added 2021-11-03) affecting Oracle / Multiple Products. a weakness (CWE-502) Unauthenticated remote administrative access may be possible. The CISA remediation deadline has passed—treat as an emergency patch priority.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

CISA KEV Record for CVE-2020-2555

Name: Oracle Multiple Products Remote Code Execution Vulnerability · CISA KEV detail

Exploit added: 2021-11-03

Action due: 2022-05-03

Required action: Apply updates per vendor instructions.

Public exploit references (Exploit-DB) for CVE-2020-2555

EDB-ID Source Kind Published Link
48508 exploit_db edb 2020-05-22 Exploit-DB ↗
48320 exploit_db edb 2020-04-14 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2020-2555

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-28 92.68% 93.14% +0.46%
2 2026-04-07 93.14% 92.68% -0.46%
3 2026-03-04 — 93.14% —

Full EPSS history (50 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-2555

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
9.8 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2020-2555

Affected software / configurations for CVE-2020-2555

Vendor Product Version Raw CPE
oracle access_manager 11.1.2.3.0 cpe:2.3:a:oracle:access_manager:11.1.2.3.0:*:*:*:*:*:*:*
oracle coherence 3.7.1.0 cpe:2.3:a:oracle:coherence:3.7.1.0:*:*:*:*:*:*:*
oracle coherence 12.1.3.0.0 cpe:2.3:a:oracle:coherence:12.1.3.0.0:*:*:*:*:*:*:*
oracle coherence 12.2.1.3.0 cpe:2.3:a:oracle:coherence:12.2.1.3.0:*:*:*:*:*:*:*
oracle coherence 12.2.1.4.0 cpe:2.3:a:oracle:coherence:12.2.1.4.0:*:*:*:*:*:*:*
oracle commerce_platform >= 11.3.0, <= 11.3.2 cpe:2.3:a:oracle:commerce_platform:*:*:*:*:*:*:*:*
oracle commerce_platform 11.0.0 cpe:2.3:a:oracle:commerce_platform:11.0.0:*:*:*:*:*:*:*
oracle commerce_platform 11.1.0 cpe:2.3:a:oracle:commerce_platform:11.1.0:*:*:*:*:*:*:*
oracle commerce_platform 11.2.0 cpe:2.3:a:oracle:commerce_platform:11.2.0:*:*:*:*:*:*:*
oracle communications_diameter_signaling_router >= 8.0.0, <= 8.2.2 cpe:2.3:a:oracle:communications_diameter_signaling_router:*:*:*:*:*:*:*:*
oracle healthcare_data_repository 7.0.1 cpe:2.3:a:oracle:healthcare_data_repository:7.0.1:*:*:*:*:*:*:*
oracle rapid_planning 12.1 cpe:2.3:a:oracle:rapid_planning:12.1:*:*:*:*:*:*:*
oracle rapid_planning 12.2 cpe:2.3:a:oracle:rapid_planning:12.2:*:*:*:*:*:*:*
oracle retail_assortment_planning 15.0 cpe:2.3:a:oracle:retail_assortment_planning:15.0:*:*:*:*:*:*:*
oracle retail_assortment_planning 16.0 cpe:2.3:a:oracle:retail_assortment_planning:16.0:*:*:*:*:*:*:*
oracle utilities_framework >= 4.3.0.1.0, <= 4.3.0.6.0 cpe:2.3:a:oracle:utilities_framework:*:*:*:*:*:*:*:*
oracle utilities_framework 4.2.0.2.0 cpe:2.3:a:oracle:utilities_framework:4.2.0.2.0:*:*:*:*:*:*:*
oracle utilities_framework 4.2.0.3.0 cpe:2.3:a:oracle:utilities_framework:4.2.0.3.0:*:*:*:*:*:*:*
oracle utilities_framework 4.4.0.0.0 cpe:2.3:a:oracle:utilities_framework:4.4.0.0.0:*:*:*:*:*:*:*
oracle utilities_framework 4.4.0.2.0 cpe:2.3:a:oracle:utilities_framework:4.4.0.2.0:*:*:*:*:*:*:*
oracle webcenter_portal 12.2.1.3.0 cpe:2.3:a:oracle:webcenter_portal:12.2.1.3.0:*:*:*:*:*:*:*
oracle webcenter_portal 12.2.1.4.0 cpe:2.3:a:oracle:webcenter_portal:12.2.1.4.0:*:*:*:*:*:*:*

References for CVE-2020-2555

URL Tags
http://packetstormsecurity.com/files/157054/Oracle-Coherence-Fusion-Middleware-Remote-Code-Execution.html Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/157207/Oracle-WebLogic-Server-12.2.1.4.0-Remote-Code-Execution.html Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/157795/WebLogic-Server-Deserialization-Remote-Code-Execution.html Exploit Third Party Advisory VDB Entry
https://www.oracle.com/security-alerts/cpujan2020.html Vendor Advisory
https://www.oracle.com/security-alerts/cpujan2021.html Vendor Advisory
https://www.oracle.com/security-alerts/cpujul2020.html Vendor Advisory
https://www.oracle.com/security-alerts/cpujul2021.html Patch Vendor Advisory
https://www.oracle.com/security-alerts/cpuoct2020.html Patch Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-2555 US Government Resource
cvelogic Threat Intelligence