CVE-2021-36742

Trend Micro Apex One, Apex One as a Service, and Worry-Free Business Security: Multiple Products Improper Input Validation

As of , CVE-2021-36742 in Trend Micro Apex One, Apex One as a Service, and Worry-Free Business Security is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch soon.

Exploited
Yes: CISA listed it on 3 November 2021
US federal deadline
17 November 202114 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.01Higher than 73% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
Not availableCISA listed it before 4 February 2022, where the EPSS files we read begin.
Public exploit
None foundNeither Metasploit nor Exploit-DB lists one.
Fix
Vendor advice: success.trendmicro.comLinks below, from CISA's entry.

What CISA says to do

Apply updates per vendor instructions.

CISA's required action

What the flaw is

Trend Micro Apex One, Apex One as a Service, and Worry-Free Business Security contain an improper input validation vulnerability that allows for privilege escalation.

CISA's description

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.

The CVE record's description, from trendmicro

CVE published
29 July 2021
Assigned by
trendmicro
CVSS
7.8 High (CVSS 3.1, from CISA-ADP)
CWE-20
Improper Input Validation
CISA SSVC, exploitation
active
CISA SSVC, automatable
no
CISA SSVC, technical impact
total

Timeline

  1. The CVE record was published.
  2. CISA added it to its list of exploited vulnerabilities.
  3. The US federal deadline to fix it.

Apex One, Apex One as a Service, and Worry-Free Business Security: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2021-36741Multiple Products Improper Input ValidationTrend Micro Apex One, Apex One as a Service, and Worry-Free Business SecurityPatch soon0.05

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