{"id":86756,"date":"2026-03-23T09:39:07","date_gmt":"2026-03-23T09:39:07","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2025-21086-escalation-of-privilege-vulnerability-in-intel-s-700-series-ethernet-linux-kernel-mode-driver","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-21086-escalation-of-privilege-vulnerability-in-intel-s-700-series-ethernet-linux-kernel-mode-driver\/","title":{"rendered":"CVE-2025-21086: Escalation of Privilege Vulnerability in Intel’s 700 Series Ethernet Linux Kernel-Mode Driver<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

This report discusses a critical vulnerability, CVE-2025-21086, that affects the Linux kernel-mode driver for Intel’s 700 series Ethernet. Improper input validation in this driver allows potential privilege escalation. The vulnerability poses a significant risk to data integrity and system security and could impact any system running a version of Intel 700 series Ethernet driver before 2.28.5.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-21086
\nSeverity: High (7.5 CVSS Score)
\nAttack Vector: Local
\nPrivileges Required: Low
\nUser Interaction: Required
\nImpact: Potential system compromise or data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Intel 700 Series Ethernet Linux Kernel-Mode Driver | Prior to 2.28.5<\/p>\n

How the Exploit Works<\/strong><\/p>\n

An authenticated user can exploit this vulnerability by sending a specially crafted input to the affected driver. Due to improper input validation, the malicious input could lead to an escalation of privilege, potentially enabling the user to execute arbitrary code with elevated privileges, compromise the system, or cause data leakage.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Here is a conceptual example of a shell command that could exploit this vulnerability:<\/p>\n

$ echo 'malicious_input' | sudo tee \/dev\/intel700<\/code><\/pre>\n
In this example, `malicious_input` represents a specially crafted input that exploits the improper input validation vulnerability. The `echo` command prints the `malicious_input`, and the `sudo tee` command writes this input to the device file `\/dev\/intel700`, representing the affected driver. Since `sudo` is used, the command is executed with root privileges, showcasing the potential for privilege escalation.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
Users are strongly advised to apply the vendor patch as soon as possible. If unable to apply the patch immediately, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) could serve as temporary mitigation. Regularly updating all systems and applications, and following cybersecurity best practices can also help prevent such vulnerabilities.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview This report discusses a critical vulnerability, CVE-2025-21086, that affects the Linux kernel-mode driver for Intel’s 700 series Ethernet. Improper input validation in this driver allows potential privilege escalation. The vulnerability poses a significant risk to data integrity and system security and could impact any system running a version of Intel 700 series Ethernet driver […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-86756","post","type-post","status-publish","format-standard","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t