---
title: "CVE-2026-59310: Broadcom VMware vCenter Path Traversal Vulnerability"
url: https://erroneo.us/security/cve/CVE-2026-59310/
description: "CVE-2026-59310 (Broadcom VMware vCenter): Exploited in the wild (CISA KEV). VMware vCenter contains a directory traversal vulnerability in the Syslog…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-07-30
date_modified: 2026-09-15
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-59310"
kev: true
cvss: 9.8
epss: 0.02565
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-59310: Broadcom VMware vCenter Path Traversal 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 vCenter. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2026-08-18, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2026-08-21 ; treat that as the outer limit, not the target. CISA also lists it as known to be used in ransomware campaigns .
- EPSS 2.6% , percentile 85: FIRST’s model estimates a 2.6% chance of exploitation activity in the next 30 days, higher than 85% of all scored CVEs (elevated). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- 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 vCenter contains a directory traversal vulnerability in the Syslog server. A malicious actor with network access to vCenter may exploit this issue to execute arbitrary code.

## Affected products (CVE record)

- VMware Cloud Foundation: 9.1.x.x, 9.0.x.x, 5.x
- VMware vSphere Foundation: 9.1.x.x, 9.0.x.x
- VMware vCenter: 9.1.x.x < 9.1.0.0300, 9.0.x.x < 9.0.2.0100, 8.0 < 8.0 U3k
- VMware Telco Cloud Infrastructure: 3.0
- VMware Telco Cloud Platform: 5.1.x, 5.0.x, 4.x, 3.0

## Severity

- vmware CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: added 2026-08-18; federal due date 2026-08-21. Known ransomware use: Known.
- 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 yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 2.56% probability of exploitation activity in the next 30 days; percentile 85.

## 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-2026-59310](https://www.cve.org/CVERecord?id=CVE-2026-59310)
- [NVD entry CVE-2026-59310](https://nvd.nist.gov/vuln/detail/CVE-2026-59310)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-59310)
- [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)
- [medium.com](https://medium.com/@quirso_de/global-exploitation-of-cve-2026-59310-by-suspected-chinese-nexus-apt-related-cve-2026-59309-443a79e1466d)
- [medium.com](https://medium.com/@quirso_de/active-exploitation-of-cve-2026-59310-361-victim-ips-across-47-countries-9783187cc6ff)

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Source page: https://erroneo.us/security/cve/CVE-2026-59310/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt