Broadcom VMware vCenter Path Traversal Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2026-08-18
• Known to be used in ransomware campaigns
• Critical severity: CVSS 9.8

[ Description ]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.

CISA: Broadcom VMware vCenter contains a path traversal vulnerability which could allow a threat actor with network access to vCenter to execute arbitrary code.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 21 Aug 2026): 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.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAd…Vendor Advisory
• medium.com/@quirso_de/active-exploitation-of-cve-2026-59310-361-victim-ips-across-47-co…Third Party Advisory
• medium.com/@quirso_de/global-exploitation-of-cve-2026-59310-by-suspected-chinese-nexus-…Third Party Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource