CVE-2026-41709: low-severity vulnerability in VMware ESX
ESX insufficient logging vulnerability
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
Prioritize patching. It under exploitation confirmed by CISA and has an official Brazilian government alert.
Brazil's federal government published an alert, recommendation or bulletin that cites this vulnerability.
- CISC Gov.br · 04 Nov 2026Boletim do CISC de Vulnerabilidadesread on gov.br ↗
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
VMware ESX has a logging gap: a malicious administrator could perform certain actions without them being recorded in the logs. This makes it harder to detect or audit misuse by someone who already has administrative access.
VMware ESX contains insufficient logging (CWE-778, CVSS 2.7 LOW). An attacker with administrative privileges can perform certain operations that are not recorded in audit logs, weakening detection and forensic capability. Exploitation requires existing high-privilege access, and the impact is limited to loss of audit integrity rather than direct compromise.
In the same product, most dangerous first.