What’s Vulnerable › Vulnerabilities

CVE-2021-23139

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% 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-476

Description

A null pointer vulnerability in Trend Micro Apex One and Worry-Free Business Security 10.0 SP1 could allow an attacker to crash the CGI program on affected installations.

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://success.trendmicro.com/solution/000289229
• https://success.trendmicro.com/solution/000289230

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