# CISA Mandates VMware vCenter Patch

The Cybersecurity and Infrastructure Security Agency (CISA) has issued a mandatory three-day deadline for federal agencies to patch a critical remote code execution vulnerability (CVE-2026-59310) in VMware vCenter Server's Syslog component. This vulnerability, with a CVSS score of 9.8, has been actively exploited by ransomware groups, prompting urgent action to mitigate significant cybersecurity risks. Broadcom released patches in July 2026, but no workaround exists, compelling agencies and contractors to accelerate patch deployment and implement network segmentation to protect virtualization management infrastructure.

- **Why this matters:** Federal agencies must comply with CISA's expedited patching directive to avoid operational disruptions and security breaches.
- VMware and Broadcom are key vendors providing the affected software and patches, highlighting the importance of vendor coordination in cybersecurity procurement.
- Procurement professionals should prioritize contracts and services that support rapid vulnerability remediation, network segmentation, and ransomware defense.
- Organizations supporting federal IT infrastructure should evaluate their patch management and incident response capabilities in light of this critical vulnerability.

**Jurisdictions:** federal
**Industries:** Information Technology
**Topics:** Cybersecurity
**Published:** September 15, 2026

### Government Entities
- Cybersecurity and Infrastructure Security Agency (CISA)
- Canada's Cyber Centre

### Vendors
- Broadcom (Vendor/patch provider)
- VMware (Software vendor)

### Sources
- [VMware vCenter RCE CVE-2026-59310: CVSS 9.8 [2026]](https://shattered.io/vmware-vcenter-cve-2026-59310-ransomware-kev-2026) - shattered.io