Actively exploited · Published Jul 30, 2026 · Assigned by vmware
CVE-2026-41709ESX insufficient logging vulnerability
Low 2.7 Exploited
In plain English
A low-severity security flaw in Cloud Foundation from VMware. Attackers are actively exploiting it in the wild (listed by CISA on October 28, 2026). The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities). 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.
CISA guidance
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.
Federal agencies must remediate by Nov 11, 2026.
Official description
VMware ESX contains an insufficient logging vulnerability. A malicious administrator could exploit this issue to perform certain operations without them being logged.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| VMware | Cloud Foundation | 9.1.x.x9.0.x.x5.x – before 5.2.4 |
| VMware | vSphere Foundation | 9.1.x.x9.0.x.x |
| VMware | ESX | 9.1.x.x – before ESXi-9.1.0.0-253709339.0.x.x – before ESXi-9.0.2.0100-255950258.0 – before ESXi80U3j-25429389 |
| VMware | Telco Cloud Platform | 5.1.x5.0.x |
Weakness: CWE-778 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N