How severe is CVE-2020-2555?

CVE-2020-2555 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-2555 being actively exploited?

Yes. CVE-2020-2555 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2021-11-03, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2020-2555?

CVE-2020-2555 primarily affects Oracle Access Manager. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-2555?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2020-2555 have an EU (EUVD) identifier?

Yes. CVE-2020-2555 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-22348. It is also flagged as exploited in the EUVD (since 2021-11-03).

When was CVE-2020-2555 published?

CVE-2020-2555 was published on 2020-01-15 and last updated on 2026-06-17.

CVE-2020-2555

CVE-2020-2555 is a critical-severity vulnerability in Oracle Access Manager with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2021-11-03). The underlying weakness is classified as CWE-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 97% (100th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2021-11-03)
EU (EUVD) id: EUVD-2020-22348
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2021-11-03)
Weakness: CWE-502
Affected product: Oracle Access Manager
Published: 2020-01-15
Last modified: 2026-06-17

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).

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).
How severe is CVE-2020-2555?: CVE-2020-2555 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-2555 being actively exploited?: Yes. CVE-2020-2555 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2021-11-03, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2020-2555?: CVE-2020-2555 primarily affects Oracle Access Manager. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-2555?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2020-2555 have an EU (EUVD) identifier?: Yes. CVE-2020-2555 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-22348. It is also flagged as exploited in the EUVD (since 2021-11-03).
When was CVE-2020-2555 published?: CVE-2020-2555 was published on 2020-01-15 and last updated on 2026-06-17.

References

Affected products (22)

cpe:2.3:a:oracle:access_manager:11.1.2.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:coherence:3.7.1.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:coherence:12.1.3.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:coherence:12.2.1.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:coherence:12.2.1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:commerce_platform:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:commerce_platform:11.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:commerce_platform:11.1.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:commerce_platform:11.2.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_diameter_signaling_router:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:healthcare_data_repository:7.0.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:rapid_planning:12.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:rapid_planning:12.2:*:*:*:*:*:*:*
cpe:2.3:a:oracle:retail_assortment_planning:15.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:retail_assortment_planning:16.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:utilities_framework:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:utilities_framework:4.2.0.2.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:utilities_framework:4.2.0.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:utilities_framework:4.4.0.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:utilities_framework:4.4.0.2.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:webcenter_portal:12.2.1.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:webcenter_portal:12.2.1.4.0:*:*:*:*:*:*:*

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