#VU109485 Input validation error in VMware ESXi - CVE-2025-41226

Vulnerability identifier: #VU109485

Vulnerability risk: Medium

CVSSv4.0: 2.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H/E:U/U:Green]

CVE-ID: CVE-2025-41226

CWE-ID: CWE-20

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
VMware ESXi
Operating systems & Components / Operating system

Vendor: VMware, Inc

Description

The vulnerability allows a remote guest to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote guest can perform a denial of service attack against other guest VMs with VMware Tools running and guest operations enabled.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

VMware ESXi: ESXi70U1c-17325551 - ESXi80a-20842819

---

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

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.