---
title: "CVE-2026-41709: Broadcom VMWare ESX Insufficient Logging Vulnerability"
url: https://erroneo.us/security/cve/CVE-2026-41709/
description: "CVE-2026-41709 (Broadcom VMware ESX): Exploited in the wild (CISA KEV). VMware ESX contains an insufficient logging vulnerability. A malicious administrator…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-07-30
date_modified: 2026-10-29
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-41709"
kev: true
cvss: 2.7
epss: 0.00689
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-41709: Broadcom VMWare ESX Insufficient Logging Vulnerability

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run Broadcom VMware ESX. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2026-10-28, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2026-11-11 ; treat that as the outer limit, not the target.
- EPSS 0.7% , percentile 53: FIRST’s model estimates a 0.7% chance of exploitation activity in the next 30 days, higher than 53% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Needs an account (high (admin)). Exposure depends on who can log in.
- Editorial verdict: Act now. VMware vCenter CVE-2026-59310: Exploited Syslog RCE — If you run vCenter and have not installed Broadcom's July 29 fix, patch today and hunt for persistence; this is unauthenticated root code execution with hundreds of victims and ransomware use.

## What it is

VMware ESX contains an insufficient logging vulnerability. A malicious administrator could exploit this issue to perform certain operations without them being logged.

## Affected products (CVE record)

- VMware Cloud Foundation: 9.1.x.x, 9.0.x.x, 5.x < 5.2.4
- VMware vSphere Foundation: 9.1.x.x, 9.0.x.x
- VMware ESX: 9.1.x.x < ESXi-9.1.0.0-25370933, 9.0.x.x < ESXi-9.0.2.0100-25595025, 8.0 < ESXi80U3j-25429389
- VMware Telco Cloud Platform: 5.1.x, 5.0.x

## Severity

- vmware CVSS 3.1: 2.7 `CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N`

## Exploitation

- CISA KEV: added 2026-10-28; federal due date 2026-11-11. Known ransomware use: Unknown.
- CISA required action: 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 SSVC assessment: exploitation active , automatable no , technical impact partial .
- FIRST EPSS (model of 2026-11-05): 0.69% probability of exploitation activity in the next 30 days; percentile 53.

## Sources

- [Listed in CISA KEV notes (support.broadcom.com)](https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/38017)
- [CVE.org record CVE-2026-41709](https://www.cve.org/CVERecord?id=CVE-2026-41709)
- [NVD entry CVE-2026-41709](https://nvd.nist.gov/vuln/detail/CVE-2026-41709)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-41709)
- [Listed in CISA KEV notes (cisa.gov)](https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk)
- [Listed in CISA KEV notes (cisa.gov)](https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk)

---
Source page: https://erroneo.us/security/cve/CVE-2026-41709/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt