CVE-2025-20093 in 800 Series Ethernet
Summary
by MITRE • 08/12/2025
Improper check for unusual or exceptional conditions in the Linux kernel-mode driver for some Intel(R) 800 Series Ethernet before version 1.17.2 may allow an authenticated user to potentially enable escalation of privilege via local access.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 08/12/2025
The vulnerability identified as CVE-2025-20093 represents a critical flaw in the Linux kernel-mode driver for Intel(R) 800 Series Ethernet hardware components. This issue stems from an inadequate validation mechanism that fails to properly detect and handle unusual or exceptional conditions within the driver's operational framework. The flaw specifically affects versions prior to 1.17.2, indicating that the vulnerability has been present in the driver codebase for an extended period, potentially exposing numerous systems to exploitation.
The technical nature of this vulnerability places it squarely within the realm of privilege escalation attacks, where an authenticated local user can leverage the improper condition checking to elevate their privileges on the affected system. The driver operates in kernel mode, which means that any flaw in its operation can potentially provide attackers with direct access to the most privileged system resources. The root cause lies in the driver's failure to adequately validate input parameters, handle error states, or properly manage exceptional conditions that may arise during normal operation. This inadequate validation creates a pathway for malicious users to manipulate the driver's behavior and gain elevated system privileges.
From an operational standpoint, the impact of this vulnerability extends beyond simple privilege escalation as it represents a fundamental weakness in the system's security posture. The requirement for local authentication means that attackers must first establish a foothold on the target system, but once achieved, they can leverage this flaw to gain root or administrative access. This vulnerability particularly affects enterprise environments where Intel 800 Series Ethernet hardware is deployed, potentially compromising entire networks if exploited successfully. The attack vector is local, which reduces the complexity of exploitation but also means that the vulnerability can be particularly dangerous in environments where local access is more readily available.
The mitigation strategy for this vulnerability involves immediate deployment of the patched driver version 1.17.2 or later, which includes proper validation mechanisms to address the exceptional condition handling flaw. System administrators should prioritize patching across all affected systems, particularly those running in high-security environments or critical infrastructure. Additional protective measures include implementing strict access controls to limit local user privileges, monitoring for unusual system behavior that might indicate exploitation attempts, and maintaining comprehensive system logging to detect potential abuse of this vulnerability. Organizations should also consider implementing network segmentation and privilege separation to limit the potential impact should the vulnerability be exploited despite patches. The vulnerability aligns with CWE-252, which describes improper checking for unusual conditions, and represents a clear violation of the principle of least privilege that forms the foundation of secure system design. This flaw also maps to ATT&CK technique T1068, which covers privilege escalation through local exploits, demonstrating how this vulnerability can be leveraged within established attack frameworks.