CVE-2026-59310criticalunder attackransomwareCWE-22

CVE-2026-59310: critical vulnerability in VMware vCenter

vCenter directory-traversal vulnerability

Published · Updated

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90Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA, has an official Brazilian government alert and has a public proof of concept.

ssvc Actcvss 9.8epss 62%
from disclosure to weapon18 days
Published on NVDJul 30
1st PoC+18d
CISA KEV+19d
Official alert in Brazil

Brazil's federal government published an alert, recommendation or bulletin that cites this vulnerability.

Source: CTIR Gov (GSI) and CISC Gov.br, under the CC BY-ND 3.0 license.
Action required by CISAfederal deadline: 2026-08-21

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.

In short

VMware vCenter's Syslog server contains a flaw that lets attackers access files outside their intended directory through specially crafted requests. An attacker with network access can exploit this to run malicious code on the system.

Technical detail

A directory traversal vulnerability (CWE-22) exists in vCenter's Syslog server component, allowing an unauthenticated or network-adjacent attacker to bypass access controls and read/write arbitrary files on the system. Successful exploitation can lead to remote code execution with vCenter privileges.

Summary generated and translated by AI from the official description.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
VMware · Cloud FoundationVMware · Telco Cloud InfrastructureVMware · Telco Cloud PlatformVMware · vCenterVMware · vSphere Foundation
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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