What’s Vulnerable › Vulnerabilities

CVE-2021-42105

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-10-21 · updated 2026-06-17
• Weakness: CWE-269

Description

Unnecessary privilege vulnerabilities in Trend Micro Apex One, Apex One as a Service, Worry-Free Business Security 10.0 SP1 and Worry-Free Business Security Services could allow 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. This vulnerability is similar to but not identical to CVE-2021-42104, 42106 and 42107.

Affected products

• Trend Micro Apex One: 2019
• Trend Micro Worry-Free Business Security: 10.0-sp1
• Trend Micro, Inc. Trend Micro Worry-Free Business Security Services: all versions

References

• https://success.trendmicro.com/solution/000289229
• https://success.trendmicro.com/solution/000289230
• https://www.zerodayinitiative.com/advisories/ZDI-21-1215/
• https://success.trendmicro.com/solution/000289229
• https://success.trendmicro.com/solution/000289230
• https://www.zerodayinitiative.com/advisories/ZDI-21-1215/

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