CVE intelligence and bounded remediation

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

Critical CVSS 9.8 CISA KEV

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).

Severity
Critical
CVSS
9.8 (3.1)
Published
2020-01-15
CISA KEV
Known exploited
Ecosystem
software/application
Weaknesses
CWE-502

Affected products

  • oracle / access_manager / 11.1.2.3.0
  • oracle / coherence / 3.7.1.0
  • oracle / coherence / 12.1.3.0.0
  • oracle / coherence / 12.2.1.3.0
  • oracle / coherence / 12.2.1.4.0
  • oracle / commerce_platform

Showing 6 representative product identities from 22 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Unsafe deserialization and object reconstruction

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Check exposure

  • Inventory serialization formats accepted from requests, queues, caches, files, cookies, and cross-service messages.
  • Trace whether untrusted input can select classes, types, callbacks, constructors, or object hooks during decoding.
  • Identify signing, schema validation, trust-boundary, and compatibility settings for each decoder.

Remediate safely

  • Replace native object deserialization with a data-only format and explicit schema validation.
  • If replacement is not immediate, use a safe decoder with a minimal type allowlist and disable polymorphic or executable hooks.
  • Update the affected library and add inert tests for unknown types, extra fields, malformed nesting, and unsigned data.

Authoritative sources

Complete CVE record and remediation plan

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