Which products and versions are affected by CVE-2026-59310?

Affected: Vcenter Server (Vmware) versions 8.0, 8.0-a, 8.0-b, 8.0-c, 8.0-update1, 8.0-update1a, 8.0-update1b, 8.0-update1c; Cloud Foundation versions >= 9.1.x.x; Telco Cloud Infrastructure versions >= 3.0, among others. The full list is in the CVE brief.

Is CVE-2026-59310 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Aug 10, 2026 and is known to be used in ransomware campaigns.

Is CVE-2026-59310 in the CISA KEV catalog?

Yes. It was added on Aug 18, 2026 with a federal remediation due date of Aug 21, 2026.

Is there a public exploit for CVE-2026-59310?

Public exploit code is available.

Is there a fix for CVE-2026-59310?

Fixed versions are available, including vCenter 8.0 U3k, vCenter 9.0.2.0100, vCenter 9.1.0.0300.

How urgently should CVE-2026-59310 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2026-59310

CriticalExploitedPublic exploit

VMware vCenter contains a directory traversal vulnerability in the Syslog server.

Published Jul 30, 2026 · Updated Sep 12, 2026

Key Facts

Patch immediately

CVE-2026-59310 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Vcenter Server (Vmware), Cloud Foundation, Telco Cloud Infrastructure and 3 more products.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Aug 10, 2026 and is known to be used in ransomware campaigns. Public exploit code is available.
EPSS estimates a 2.6% probability of exploitation in the next 30 days.
Fixed versions are available, including vCenter 8.0 U3k, vCenter 9.0.2.0100, vCenter 9.1.0.0300.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

9.8

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

EPSS (30-day exploit likelihood)

2.6%

Higher than 84.8% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings, used by ransomware

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2026-59310 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
CISA KEV	Aug 18, 2026	Aug 21, 2026	Known
Industry KEV feed	Aug 10, 2026	Aug 21, 2026	Known
CIRCL KEV	Aug 10, 2026	Aug 21, 2026	Not reported
ENISA EUVD	Aug 10, 2026	n/a	Not reported

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.

Affected Products

32 affected entries in total

Product	Affected versions	Fixed in
Vcenter ServerVmware	8.0, 8.0-a, 8.0-b, 8.0-c, 8.0-update1, 8.0-update1a, 8.0-update1b, 8.0-update1c	8.0
Cloud Foundation	>= 9.1.x.x	n/a
Telco Cloud Infrastructure	>= 3.0	n/a
Telco Cloud Platform	>= 5.1.x	n/a
vCenter	>= 9.1.x.x	9.1.0.0300

1 more affected products in the full CVE brief

Patched Releases

vCenter

8.0 U3k, 9.0.2.0100, 9.1.0.0300

Vcenter Server

8.0, 9.0.2.0100, 9.1.0.0300

Timeline

Publicly disclosed
Jul 30, 2026
Added to Industry KEV feed
Aug 10, 2026
Added to CIRCL KEV
Aug 10, 2026
Added to ENISA EUVD
Aug 10, 2026
Added to CISA KEV
Aug 18, 2026
Last updated
Sep 12, 2026

Weakness Type

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

References

4 more references in the full CVE brief

FAQ

Common Questions.

VMware vCenter contains a directory traversal vulnerability in the Syslog server.
Affected: Vcenter Server (Vmware) versions 8.0, 8.0-a, 8.0-b, 8.0-c, 8.0-update1, 8.0-update1a, 8.0-update1b, 8.0-update1c; Cloud Foundation versions >= 9.1.x.x; Telco Cloud Infrastructure versions >= 3.0, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Aug 10, 2026 and is known to be used in ransomware campaigns.
Yes. It was added on Aug 18, 2026 with a federal remediation due date of Aug 21, 2026.
Public exploit code is available.
Fixed versions are available, including vCenter 8.0 U3k, vCenter 9.0.2.0100, vCenter 9.1.0.0300.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Is CVE-2026-59310 Running On Your Attack Surface?

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