CVE-2023-41179: in the CISA KEV catalogue

Trend Micro Apex One and Worry-Free Business Security Remote Code Execution Vulnerability. CISA added CVE-2023-41179 to the Known Exploited Vulnerabilities catalogue on 2023-09-21 with a default due date of 2023-10-12. Known ransomware campaign use: Unknown. Forensic triage flag: No.

Trend Micro Apex One and Worry-Free Business Security contain an unspecified vulnerability in the third-party anti-virus uninstaller that could allow an attacker to manipulate the module to conduct remote code execution. An attacker must first obtain administrative console access on the target system in order to exploit this vulnerability. (CISA description)

Vendor / product: Trend Micro Apex One and Worry-Free Business Security
CWE: Not listed
CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
EPSS: 4.2%, percentile 91 (scored 2026-11-03)

EPSS puts about 4.2 in 100 odds (4.2%) on exploitation activity being observed in the next 30 days. Its score is higher than or equal to that of 91% of scored CVEs. This is a model estimate about exploitation anywhere, not about your environment.

Vendor and reference links (from CISA)

Your own deadline under CISA BOD 26-04 depends on exposure, automatability and technical impact: work it out with the BOD 26-04 calculator.

Data dates. CISA KEV catalogue version 2026.11.03, released 2026-11-03, 1,767 entries (checked 2026-11-03). EPSS model v2026.06.15, scored 2026-11-03, 399,388 CVEs. Sources: CISA and FIRST (EPSS by FIRST; scores generated by Empirical Security). Copied to our own database and refreshed automatically; if a refresh fails, the previous copy keeps serving with its own date.

Frequently asked questions

Is CVE-2023-41179 in the CISA KEV catalogue?

Yes. CISA added CVE-2023-41179 (Trend Micro Apex One and Worry-Free Business Security Remote Code Execution Vulnerability) to the Known Exploited Vulnerabilities catalogue on 2023-09-21. CISA's default due date for it is 2023-10-12.

Is CVE-2023-41179 used in ransomware attacks?

CISA marks known ransomware campaign use as Unknown for CVE-2023-41179. That means CISA lacks confirmation, not that ransomware groups do not use it.

What should I do about CVE-2023-41179?

CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Sources

CISA, Known Exploited Vulnerabilities Catalog (accessed 2026-11-03)
FIRST, Exploit Prediction Scoring System (EPSS) (EPSS by FIRST; scores generated by Empirical Security)
NVD record for CVE-2023-41179