Buffer overflow in Intel Ethernet Controller
CVE-2025-27243
Out-of-bounds write in the firmware for some Intel(R) Ethernet Controller E810 before version cvl fw 1.7.8.x within Ring 0: Bare Metal OS may allow a denial of service. System software adversary with a privileged user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not 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.
Vulnerability class: Buffer Overflow
EPSS: 0.001 (1.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Intel Ethernet_controller
- Intel Ethernet_network_adapter_e810-2cqda2
- Intel Ethernet_network_adapter_e810-cqda1
- Intel Ethernet_network_adapter_e810-cqda1_for_ocp_3.0
- Intel Ethernet_network_adapter_e810-cqda2
- Intel Ethernet_network_adapter_e810-cqda2_for_ocp_3.0
- Intel Ethernet_network_adapter_e810-cqda2t
- Intel Ethernet_network_adapter_e810-xxvda2
- Intel Ethernet_network_adapter_e810-xxvda2_for_ocp_3.0
- Intel Ethernet_network_adapter_e810-xxvda4
Weakness classification (CWE)
References
- secure@intel.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-27243?
- CVE-2025-27243 is a medium-severity vulnerability in Intel Ethernet Controller, classified under Out-of-bounds Write. CVSS score: 6.0/10. Published 2026-02-10.
- How severe is CVE-2025-27243?
- Medium severity. CVSS v3 base score is 6.0 out of 10.