VulnTideExploited vulnerabilities, by vendor. Data as of 28 Oct 2026.
Known exploitedIn CISA's KEV catalog since 3 November 2021Ransomware use: unknown
Oracle Multiple Products

CVE-2020-2555: Oracle Multiple Products Remote Code Execution Vulnerability

Is it exploited?

Yes. CISA added it to the Known Exploited Vulnerabilities catalog on 3 Nov 2021, 658 days after the CVE record was published.

How likely is exploitation in the next 30 days?
97.1%

EPSS score, percentile 99.9 of all scored records

How severe?
9.8 Critical

CVSS v3.0 base score, given by the CNA

What should I do?

Required action (CISA), due 3 May 2022: Apply updates per vendor instructions.

The CVE record links no vendor advisory, patch or mitigation.

Which versions are affected?

Affected: 12.2.1.3.0; 12.2.1.4.0; 4.2.0.2.0; 4.2.0.3.0; 4.3.0.1.0-4.3.0.6.0; 4.4.0.0.0; 4.4.0.2.0

Versions by product

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

What to do

Required action, set by CISA

Apply updates per vendor instructions.

CISA due date for this action: 3 May 2022.

Advisories and patches

The CVE record links no vendor advisory, patch or mitigation.

Linked from CISA's catalog entry

Affected products and versions

As listed in the CVE record.

Oracle Corporation WebCenter Portal
StatusVersions
Affected12.2.1.3.0
Affected12.2.1.4.0
Oracle Corporation Utilities Framework
StatusVersions
Affected4.2.0.2.0
Affected4.2.0.3.0
Affected4.3.0.1.0-4.3.0.6.0
Affected4.4.0.0.0
Affected4.4.0.2.0

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

About this vulnerability

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).

Summary: CISA's KEV catalog, as of 28 Oct 2026.

  • CISA added CVE-2020-2555 to its Known Exploited Vulnerabilities (KEV) catalog on 3 Nov 2021.
  • CISA's ransomware flag for this entry is "Unknown": no evidence of ransomware use in the catalog, which is not proof of none.
  • The due date CISA sets for the required action is 3 May 2022.
  • The CVE record was published on 15 Jan 2020, 658 days before it was added to KEV.
  • The CVE record carries a CVSS v3.0 base score of 9.8 (Critical), given by its CNA.
  • FIRST's EPSS model puts the probability of exploitation in the next 30 days at 97.1% (percentile 99.9), as of 28 Oct 2026.
  • CISA's SSVC assessment in the CVE record: exploitation active, automatable yes, technical impact total.

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026. About the data.

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).

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

Weakness

  • CWE-502: Deserialization of Untrusted Data

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record and the KEV entry.

Timeline

DateEvent
15 Jan 2020CVE record published
3 Nov 2021Added to CISA KEV
3 May 2022CISA due date for the required action
21 Oct 2025CVE record last updated

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