CVE-2020-2555
CriticalExploitedPublic exploitEasily exploitable vulnerability allows unauthenticated attacker with network access via T3 to compromise Oracle Coherence.
Published Jan 15, 2020 · Updated Oct 27, 2025
Key Facts
Patch immediately- CVE-2020-2555 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Access Manager (Oracle), Coherence (Oracle), Commerce Platform (Oracle) and 6 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Oct 20, 2020. Public exploit code is available.
- EPSS estimates a 97% probability of exploitation in the next 30 days.
- Fixed versions are available, including Commerce Platform <=11.3.2, Communications Diameter Signaling Router <=8.2.2, Utilities Framework <=4.3.0.6.0.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
97%
Higher than 99.8% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2020-2555 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
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).
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Nov 3, 2021 | May 3, 2022 | Not reported |
| Industry KEV feed | Oct 20, 2020 | May 3, 2022 | Not reported |
| CIRCL KEV | Nov 3, 2021 | May 3, 2022 | Not reported |
| ENISA EUVD | Nov 3, 2021 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
24 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Access ManagerOracle | 11.1.2.3.0 | n/a |
| CoherenceOracle | 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, 3.7.1.0 | n/a |
| Commerce PlatformOracle | 11.0.0, 11.1.0, 11.2.0 | 11.3.2 |
| Communications Diameter Signaling RouterOracle | See advisory | 8.2.2 |
| Healthcare Data RepositoryOracle | 7.0.1 | n/a |
Patched Releases
Commerce Platform
<=11.3.2
Communications Diameter Signaling Router
<=8.2.2
Utilities Framework
<=4.3.0.6.0
Timeline
Publicly disclosed
Jan 15, 2020
Added to Industry KEV feed
Oct 20, 2020
Added to CISA KEV
Nov 3, 2021
Added to CIRCL KEV
Nov 3, 2021
Added to ENISA EUVD
Nov 3, 2021
Last updated
Oct 27, 2025
Weakness Type
- CWE-502 Deserialization of Untrusted Data
References
- advisoryhttps://www.oracle.com/security-alerts/cpujan2020.html
- advisoryhttps://www.oracle.com/security-alerts/cpujan2021.html
- advisoryhttps://www.oracle.com/security-alerts/cpujul2020.html
- patchhttps://www.oracle.com/security-alerts/cpujul2021.html
- patchhttps://www.oracle.com/security-alerts/cpuoct2020.html
FAQ
Common Questions.
Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Caching,CacheStore,Invocation).
Affected: Access Manager (Oracle) versions 11.1.2.3.0; Coherence (Oracle) versions 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, 3.7.1.0; Commerce Platform (Oracle) versions 11.0.0, 11.1.0, 11.2.0, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Oct 20, 2020.
Yes. It was added on Nov 3, 2021 with a federal remediation due date of May 3, 2022.
Public exploit code is available.
Fixed versions are available, including Commerce Platform <=11.3.2, Communications Diameter Signaling Router <=8.2.2, Utilities Framework <=4.3.0.6.0.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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