CVE-2020-2555
Confirmed PUBLISHEDVulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Caching,CacheStore,Invocation). Supported versions that are...
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
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).
- CVE Published
- Jan 15, 2020
- Exploitation Reported
- Nov 03, 2021
- CVSS
- 9.8 Critical
- EPSS
- —
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| Oracle Corporation |
WebCenter Portal
|
12.2.1.3.0 |
Affected |
| Oracle Corporation |
WebCenter Portal
|
12.2.1.4.0 |
Affected |
| Oracle Corporation |
Utilities Framework
|
4.2.0.2.0 |
Affected |
| Oracle Corporation |
Utilities Framework
|
4.2.0.3.0 |
Affected |
| Oracle Corporation |
Utilities Framework
|
4.3.0.1.0-4.3.0.6.0 |
Affected |
| Oracle Corporation |
Utilities Framework
|
4.4.0.0.0 |
Affected |
| Oracle Corporation |
Utilities Framework
|
4.4.0.2.0 |
Affected |
CVE References
- oracle.com/security-alerts/cpujul2020.html oracle.com · CVE Record https://www.oracle.com/security-alerts/cpujul2020.html
- oracle.com/security-alerts/cpujan2020.html oracle.com · CVE Record https://www.oracle.com/security-alerts/cpujan2020.html
- packetstormsecurity.com/files/157054/Oracle-Coherence-Fusion-Middlew... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/157054/Oracle-Coherence-Fusion-M...
- packetstormsecurity.com/files/157207/Oracle-WebLogic-Server-12.2.1.4... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/157207/Oracle-WebLogic-Server-12...
- packetstormsecurity.com/files/157795/WebLogic-Server-Deserialization... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/157795/WebLogic-Server-Deseriali...
Show 3 more references
- oracle.com/security-alerts/cpuoct2020.html oracle.com · CVE Record https://www.oracle.com/security-alerts/cpuoct2020.html
- oracle.com/security-alerts/cpujan2021.html oracle.com · CVE Record https://www.oracle.com/security-alerts/cpujan2021.html
- oracle.com/security-alerts/cpujul2021.html oracle.com · CVE Record https://www.oracle.com/security-alerts/cpujul2021.html
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CISA First | 2021-11-03 00:00 UTC |
Scanner Artifacts
Nuclei and Metasploit references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Metasploit | https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/misc/weblogic_deserialize_badattrval.rb | Apr 28, 2025 |
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitation Status
Exploited in the wild
Recorded 2021-11-03 00:00:00 UTC · CISA
Proof of concept available
Recorded 2020-03-06 15:20:17 UTC · GitHub
Weaknesses (CWE)
-
Deserialization of Untrusted Data
Scanner Integrations
| Scanner | Reference | Detected |
|---|---|---|
| Metasploit | https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/misc/weblogic_deserialize_badattrval.rb | Apr 28, 2025 |
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
github · Created 2020-03-07 18:58:09 UTC · 176 stars
Weblogic com.tangosol.util.extractor.ReflectionExtractor RCE
github · Created 2020-03-06 16:02:59 UTC · 47 stars
CVE-2020-2555 Python POC
github · Created 2020-03-06 15:20:17 UTC · 3 stars
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
15:02 UTC about 1 year ago15:02 UTC · about 1 year ago
Metasploit module available
Exploit module available
-
00:00 UTC over 4 years ago00:00 UTC · over 4 years ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
15:20 UTC over 6 years ago15:20 UTC · over 6 years ago
Public PoC available
Public proof-of-concept code published
-
16:34 UTC over 6 years ago16:34 UTC · over 6 years ago
CVE published
Vulnerability disclosed publicly
-
00:00 UTC over 6 years ago00:00 UTC · over 6 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2020-2555
{
"cve_id": "CVE-2020-2555",
"title": "Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (co...",
"affected_vendor": "Oracle Corporation",
"affected_product": "WebCenter Portal, Utilities Framework",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 9.8,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}