CVE-2025-27535 Missing authorization in Intel(R) Ethernet Connection E825-C.

Medium 5.6 Published 10 Feb 2026 Updated 10 Feb 2026

A privileged local attacker can cause a denial of service in Intel Ethernet E825-C firmware due to exposed ioctl with insufficient access control.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-27535?

CVE-2025-27535 is a medium-severity missing authorization vulnerability in Intel(R) Ethernet Connection E825-C., published on 10 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Exposed ioctl with insufficient access control in the firmware for some Intel(R) Ethernet Connection E825-C. before version NVM ver. 3.84 within Ring 0: Bare Metal OS may allow a denial of service. System software adversary with a privileged user combined with a high complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

Weakness: CWE-782

Which versions are affected by CVE-2025-27535?

It affects 1 product.

Products include Intel Ethernet Controller.

How do I fix CVE-2025-27535?

No fix has been published for CVE-2025-27535 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2025-27535 being exploited?

There is no known exploitation of CVE-2025-27535 in the wild and no public exploit code.

Sources

Also known as GHSA-gq25-2cxw-wfmp.