How severe is CVE-2026-59310?

CVE-2026-59310 has a CVSS 3.1 base score of 9.8 (CRITICAL). EPSS estimates a 2.6% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2026-59310: vCenter directory-traversal vulnerability

CISA Known Exploited Vulnerabilities

Broadcom VMware vCenter Path Traversal Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2026-08-18

Remediation due

2026-08-21

Ransomware

Known use

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 notes
https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/38017 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-59310

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.

Severity

CVSS 3.1 · CNA9.8 CRITICAL

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

SSVC · CISA-ADP

Exploitationactive

Automatableyes

Technical impacttotal

Exploitation Context

as of October 12, 2026

All KEV statistics→

CISA added CVE-2026-59310 to the KEV catalog 19 days after its CVE record was published. The median for entries added in 2026 so far is 15 days.
It is one of 33 VMware entries in the CISA KEV catalog, and one of 3 added in 2026.
Its current EPSS score (2.6%) is higher than that of 10% of CISA KEV entries.

Affected Products

Vendor	Product	Affected versions
VMware	VMware Cloud Foundation	9.1.x.x 9.0.x.x 5.x
VMware	VMware vSphere Foundation	9.1.x.x 9.0.x.x
VMware	VMware vCenter	9.1.x.x to <9.1.0.0300 9.0.x.x to <9.0.2.0100 8.0 to <8.0 U3k
VMware	VMware Telco Cloud Infrastructure	3.0
VMware	VMware Telco Cloud Platform	5.1.x 5.0.x 4.x 3.0

References

1 Links

Other references

https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/38017

Record Details

Published

2026-07-30

Last updated

2026-09-12

Assigner (CNA)

vmware

Credited to

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Tool categories

Application Security Tools Penetration Testing Tools

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.

CVE-2026-59310