{"id":59385,"date":"2025-07-14T22:08:20","date_gmt":"2025-07-14T22:08:20","guid":{"rendered":""},"modified":"2025-09-26T15:18:05","modified_gmt":"2025-09-26T21:18:05","slug":"cve-2025-40736-unauthorized-administrative-credentials-modification-in-sinec-nms","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-40736-unauthorized-administrative-credentials-modification-in-sinec-nms\/","title":{"rendered":"CVE-2025-40736: Unauthorized Administrative Credentials Modification in SINEC NMS<\/strong>"},"content":{"rendered":"

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

CVE-2025-40736 is a critical vulnerability discovered in SINEC NMS, a popular network management solution. This vulnerability directly affects the security of all versions below the V4.0 of SINEC NMS. The vulnerability stems from an exposed<\/a> endpoint in the application that allows for unauthorized changes to administrative credentials, putting the entire application and associated networks at risk. This flaw could potentially give an unauthenticated attacker the ability to reset the superadmin password and gain complete control of the application, leading to system compromise or data leakage<\/a>.<\/p>\n

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

CVE ID: CVE-2025-40736
\nSeverity: Critical (9.8 CVSS score)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Unauthorized modification<\/a> of administrative credentials leading to full system compromise<\/p>\n

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

Product | Affected Versions<\/p>\n

SINEC NMS | All versions < V4.0\n\nHow the Exploit Works<\/strong><\/p>\n

The vulnerability, CVE-2025-40736, allows an attacker to manipulate the exposed endpoint that handles administrative credentials<\/a> in the application. By exploiting this endpoint, an attacker can send specially crafted requests to modify the superadmin password. As the endpoint does not sufficiently verify the authenticity of the requests, the attacker can successfully change the password and gain full control of the application without any legitimate administrative privileges<\/a>.<\/p>\n

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

Here’s a conceptual example of how an attacker might exploit the vulnerability. This is a hypothetical HTTP request to the vulnerable<\/a> endpoint, changing the superadmin password:<\/p>\n

POST \/admin\/credentials\/reset HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ \"user\": \"superadmin\", \"new_password\": \"malicious_password\" }<\/code><\/pre>\n
This request resets the superadmin password, which, when successful, provides the attacker full control of the system, leading to potential data leakage or system compromise<\/a>.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
The best way to mitigate this vulnerability is to apply the vendor-provided patch. This will properly secure the endpoint and prevent unauthorized modification<\/a> of administrative credentials. For immediate temporary mitigation, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can help to filter out malicious requests. However, these measures should be seen as temporary fixes and not a replacement for the vendor’s patch.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview CVE-2025-40736 is a critical vulnerability discovered in SINEC NMS, a popular network management solution. This vulnerability directly affects the security of all versions below the V4.0 of SINEC NMS. The vulnerability stems from an exposed endpoint in the application that allows for unauthorized changes to administrative credentials, putting the entire application and associated networks […]<\/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":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-59385","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"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