{"id":53654,"date":"2025-06-19T19:46:31","date_gmt":"2025-06-19T19:46:31","guid":{"rendered":""},"modified":"2025-07-05T11:19:28","modified_gmt":"2025-07-05T17:19:28","slug":"cve-2025-36633-critical-privilege-escalation-vulnerability-in-tenable-agent-on-windows","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-36633-critical-privilege-escalation-vulnerability-in-tenable-agent-on-windows\/","title":{"rendered":"CVE-2025-36633: Critical Privilege Escalation Vulnerability in Tenable Agent on Windows<\/strong>"},"content":{"rendered":"

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

The cybersecurity landscape constantly evolves with new vulnerabilities being identified regularly. One such security flaw that has garnered attention recently is the CVE-2025-36633. This vulnerability has been identified in Tenable Agent<\/a> versions prior to 10.8.5 on a Windows host system. It is a critical issue that allows<\/a> non-administrative users to arbitrarily delete local system files with SYSTEM privilege. This potentially leads to local privilege escalation<\/a>, putting your data integrity and system security at risk.
\nThe severity of the CVE-2025-36633 vulnerability<\/a> cannot be overstated. With a CVSS severity score of 8.8, it poses a significant risk to businesses and individuals alike. This vulnerability, if exploited, could result in system compromise or data<\/a> leakage, creating a potential disaster for affected organizations and individuals.<\/p>\n

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

CVE ID: CVE-2025-36633
\nSeverity: Critical, CVSS score 8.8
\nAttack Vector: Local
\nPrivileges Required: Low (Non-Administrative Privileges)
\nUser Interaction: None
\nImpact: Potential system<\/a> compromise and data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

Tenable Agent | Versions prior<\/a> to 10.8.5<\/p>\n

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

The exploit takes advantage of a flaw in the Tenable Agent’s permissions<\/a> system on Windows hosts. A non-administrative user with low-level access to the system can exploit this vulnerability<\/a> by sending specially crafted inputs to the Tenable Agent. This input instructs the agent to delete system files<\/a> that should normally be protected. Due to the flaw, the agent carries out this action with SYSTEM privileges leading<\/a> to arbitrary deletion of system files. This can potentially lead to privilege escalation<\/a> and system compromise.<\/p>\n

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

The following pseudocode is a conceptual example of how the vulnerability might be exploited:<\/p>\n

# User with low-level (non-admin) access\nuser> tenable_agent --delete C:\\Windows\\System32\\critical_file.sys\n# Tenable Agent performs the action with SYSTEM privileges\ntenable_agent(SYSTEM)> rm C:\\Windows\\System32\\critical_file.sys<\/code><\/pre>\n
In this example, a non-admin user instructs the Tenable Agent to delete a critical system file<\/a>. The agent, due to the vulnerability<\/a>, performs the action with SYSTEM privileges, leading to the deletion of the critical file. This could pave the way for further malicious activity like privilege escalation<\/a> or system compromise.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
The primary mitigation for this vulnerability<\/a> is to apply the vendor-provided patch. Tenable has released version 10.8.5 of the agent<\/a> that addresses this vulnerability. Users are advised to update to this version as soon as possible.
\nFor those unable to apply the patch immediately, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can help as a temporary mitigation measure. These systems can be configured to detect and block suspicious activity related to this vulnerability<\/a>. However, it’s crucial to understand that these are just temporary solutions and updating the Tenable Agent should be the priority.
\nRemember, staying vigilant and keeping your systems up-to-date are the most effective ways to maintain your cybersecurity posture.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The cybersecurity landscape constantly evolves with new vulnerabilities being identified regularly. One such security flaw that has garnered attention recently is the CVE-2025-36633. This vulnerability has been identified in Tenable Agent versions prior to 10.8.5 on a Windows host system. It is a critical issue that allows non-administrative users to arbitrarily delete local system […]<\/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":[1],"tags":[],"vendor":[82],"product":[],"attack_vector":[76],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-53654","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-microsoft","attack_vector-privilege-escalation"],"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