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Exploited vulnerability · CISA KEV

Is CVE-2020-8468 exploited? Yes: in CISA KEV since 3 Nov 2021

Gociux · Trend Micro Apex One, OfficeScan and Worry-Free Business Security Agents · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2020-8468, Trend Micro Multiple Products Content Validation Escape Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 3 Nov 2021, 595 days after it was published. It affects Trend Micro Apex One, OfficeScan and Worry-Free Business Security Agents. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 3 Nov 2021
ransomwareNot knownno confirmed use
EPSStop 10%more likely than most to be exploited
severity8.8CVSS 3.1 · high
US federal due3 May 2022BOD 22-01 deadline

What it is

Trend Micro Apex One, OfficeScan, and Worry-Free Business Security agents contain a content validation escape vulnerability that could allow an attacker to manipulate certain agent client components.

VendorTrend Micro (12 exploited CVEs in KEV)
ProductApex One, OfficeScan and Worry-Free Business Security Agents
VulnerabilityTrend Micro Multiple Products Content Validation Escape Vulnerability
WeaknessCWE-74
Published18 Mar 2020
Added to KEV3 Nov 2021
Reported by (CNA)trendmicro

What to do

  1. Check whether you run it. Look for Apex One, OfficeScan and Worry-Free Business Security Agents 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 18 Mar 2020.
  4. Get told next time. Email alerts when CISA adds a CVE for Trend Micro.

References

Questions

Is CVE-2020-8468 being exploited?

Yes. CISA added CVE-2020-8468 to the Known Exploited Vulnerabilities catalog on 3 Nov 2021, which means there is reliable evidence of exploitation in the wild.

Is CVE-2020-8468 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-2020-8468?

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, OfficeScan and Worry-Free Business Security Agents 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 2021 · Trend Micro scorecard · act-now radar.

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