{"id":86241,"date":"2026-01-09T08:21:27","date_gmt":"2026-01-09T08:21:27","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2025-1021-unauthorized-file-access-in-synology-diskstation-manager","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-1021-unauthorized-file-access-in-synology-diskstation-manager\/","title":{"rendered":"CVE-2025-1021: Unauthorized File Access in Synology DiskStation Manager<\/strong>"},"content":{"rendered":"

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

CVE-2025-1021 is a critical vulnerability found in Synology DiskStation Manager (DSM) versions before 7.1.1-42962-8, 7.2.1-69057-7, and 7.2.2-72806-3. This vulnerability exists due to missing authorization in the synocopy function, allowing remote attackers to read arbitrary files. As this vulnerability can potentially lead to system compromise or data leakage, it is of high importance to system administrators and cybersecurity professionals.<\/p>\n

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

CVE ID: CVE-2025-1021
\nSeverity: High (7.5)
\nAttack Vector: Remote
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: System compromise or data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

Synology DiskStation Manager | < 7.1.1-42962-8\nSynology DiskStation Manager | < 7.2.1-69057-7\nSynology DiskStation Manager | < 7.2.2-72806-3\n\nHow the Exploit Works<\/strong><\/p>\n

The vulnerability lies within the synocopy function in the Synology DiskStation Manager. Due to lack of proper authorization checks, an attacker can send a specially crafted request to this function. This request can direct the function to read files from arbitrary locations on the system. The read data is then returned in the response, potentially revealing sensitive system or user data.<\/p>\n

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

A conceptual exploitation of this vulnerability might look like this:<\/p>\n

POST \/synocopy\/readfile HTTP\/1.1\nHost: vulnerable_diskstation.com\nContent-Type: application\/json\n{\n\"filepath\": \"\/etc\/passwd\"\n}<\/code><\/pre>\n
In this example, an attacker is instructing the synocopy function to read the system’s password file. The contents of this file would then be included in the HTTP response.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview CVE-2025-1021 is a critical vulnerability found in Synology DiskStation Manager (DSM) versions before 7.1.1-42962-8, 7.2.1-69057-7, and 7.2.2-72806-3. This vulnerability exists due to missing authorization in the synocopy function, allowing remote attackers to read arbitrary files. As this vulnerability can potentially lead to system compromise or data leakage, it is of high importance to 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":[],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-86241","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