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Exploited vulnerability · CISA KEV

Is CVE-2022-40139 exploited? Yes: in CISA KEV since 15 Sep 2022

Gociux · Trend Micro Apex One and Apex One as a Service · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2022-40139, Trend Micro Apex One and Apex One as a Service Improper Validation Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 15 Sep 2022. It affects Trend Micro Apex One and Apex One as a Service. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 15 Sep 2022
ransomwareNot knownno confirmed use
EPSSbelow top 10%lower predicted activity right now (it is still confirmed exploited)
severity7.2CVSS 3.1 · high
US federal due6 Oct 2022BOD 22-01 deadline

What it is

Trend Micro Apex One and Apex One as a Service contain an improper validation of rollback mechanism components that could lead to remote code execution.

VendorTrend Micro (12 exploited CVEs in KEV)
ProductApex One and Apex One as a Service
VulnerabilityTrend Micro Apex One and Apex One as a Service Improper Validation Vulnerability
WeaknessCWE-353, CWE-641
Published19 Sep 2022
Added to KEV15 Sep 2022
Reported by (CNA)trendmicro

What to do

  1. Check whether you run it. Look for Apex One and Apex One as a Service in your asset inventory, including appliances and cloud images. Stack check lists every exploited Trend Micro CVE at once.
  2. Apply the fix. Apply updates per vendor instructions.
  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 19 Sep 2022.
  4. Get told next time. Email alerts when CISA adds a CVE for Trend Micro.

References

Questions

Is CVE-2022-40139 being exploited?

Yes. CISA added CVE-2022-40139 to the Known Exploited Vulnerabilities catalog on 15 Sep 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2022-40139 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-2022-40139?

Apply updates per vendor instructions. Check Trend Micro's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Apex One and Apex One as a Service 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 September 2022 · Trend Micro scorecard · act-now radar.

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