SARA / Free Tools / CVE / CVE-2021-36742

CVE-2021-36742 — Trend Micro Multiple Products Improper Input Validation Vulnerability

A improper input validation vulnerability in Trend Micro Apex One, Apex One as a Service, OfficeScan XG and Worry-Free Business Security 10.0 SP1 allows a local attacker to escalate privileges on affected installations. Please note: an attacker must first obtain the ability to ex

CVSS
EPSS
1.92% (top 16.80%)
CWE
Published
2021-07-29T19:23:14.000Z
Last modified
2025-10-21T23:25:39.588Z
CVSS vector
CISA KEV — Actively Exploited
Added to KEV
2021-11-03
BOD 22-01 due
2021-11-17
Ransomware use
Unknown

01What is this vulnerability?

A improper input validation vulnerability in Trend Micro Apex One, Apex One as a Service, OfficeScan XG and Worry-Free Business Security 10.0 SP1 allows a local attacker to escalate privileges on affected installations. Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

02Affected products

VendorProductVersions
Trend MicroTrend Micro Apex One2019, SaaS
Trend MicroTrend Micro OfficeScanXG SP1
Trend MicroTrend Micro WorryFree Business Security — 10.0 SP1

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2021-11-03. Ransomware use: Unknown.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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