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Exploited vulnerability · CISA KEV

Is CVE-2020-2551 exploited? Yes: in CISA KEV since 16 Nov 2023

Gociux · Oracle Fusion Middleware · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2020-2551, Oracle Fusion Middleware Unspecified Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 16 Nov 2023, 1401 days after it was published. It affects Oracle Fusion Middleware. If you run it, CISA's required action is: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 16 Nov 2023
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity9.8CVSS 3.0 · critical
US federal due7 Dec 2023BOD 22-01 deadline

What it is

Oracle Fusion Middleware contains an unspecified vulnerability in the WLS Core Components that allows an unauthenticated attacker with network access via IIOP to compromise the WebLogic Server.

VendorOracle (46 exploited CVEs in KEV)
ProductFusion Middleware
VulnerabilityOracle Fusion Middleware Unspecified Vulnerability
Weaknessnot specified
Published15 Jan 2020
Added to KEV16 Nov 2023
Reported by (CNA)oracle

What to do

  1. Check whether you run it. Look for Fusion Middleware in your asset inventory, including appliances and cloud images. Stack check lists every exploited Oracle CVE at once.
  2. Apply the fix. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 15 Jan 2020.
  4. Get told next time. Email alerts when CISA adds a CVE for Oracle.

Other exploited CVEs in Fusion Middleware

References

Questions

Is CVE-2020-2551 being exploited?

Yes. CISA added CVE-2020-2551 to the Known Exploited Vulnerabilities catalog on 16 Nov 2023, which means there is reliable evidence of exploitation in the wild.

Is CVE-2020-2551 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2020-2551?

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Check Oracle's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Fusion Middleware and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in November 2023 · Oracle scorecard · act-now radar.

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