cbcvebase.
CVE-2021-36742
published 2021-07-29

CVE-2021-36742: 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…

PriorityP180high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
KEVITW
CISA Known Exploited Vulnerabilitydue 2021-11-17
Exploited in the wild
EPSS
1.48%
70.7th percentile
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.

Affected

7 ranges
VendorProductVersion rangeFixed in
trend_microtrend_micro_apex_one
trend_microtrend_micro_officescan
trend_microtrend_micro_worry-free_business_security
trendmicroapex_one
trendmicroofficescan
trendmicroofficescan_business_security
trendmicroworry-free_business_security

Detection & IOCsextracted from sources · hover to see the quote

  • Vulnerability is a local privilege escalation via improper input validation; monitor for low-privileged processes spawning high-privileged child processes on hosts running Trend Micro Apex One, Apex One as a Service, OfficeScan XG, or Worry-Free Business Security 10.0 SP1
  • Refer to Trend Micro advisory solution 000287819 for Apex One / Apex One as a Service patch details to confirm patched vs. unpatched asset state
  • Refer to Trend Micro advisory solution 000287820 for Worry-Free Business Security patch details to confirm patched vs. unpatched asset state
  • ·Exploitation requires the attacker to already have low-privileged code execution on the target; this is a local privilege escalation, not a remote code execution vector — network-based detections alone are insufficient
  • ·Affected products span multiple product lines (Apex One, Apex One as a Service, OfficeScan XG, Worry-Free Business Security 10.0 SP1); detection and patching scope must cover all variants

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.04.6MEDIUMAV:L/AC:L/Au:N/C:P/I:P/A:P
vulncheck7.8HIGH
cisa7.8HIGH
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