CVE-2025-10255 - CVE House
Back to Database
Status published Medium CVE-2025-10255

Ascensio System SIA OnlyOffice Comment Messages.aspx cross site scripting

Vulnerability Description

A vulnerability was determined in Ascensio System SIA OnlyOffice up to 12.7.0. Impacted is an unknown function of the file /Products/Projects/Messages.aspx of the component Comment Handler. Executing manipulation can lead to cross site scripting. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. The vendor was informed early about this issue and replied: "We are already working on this case, and the issues will be resolved in one of the upcoming patches."

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-10255

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • 0xHamy (VulDB User)

Affected Vendor

Ascensio System SIA

View all reports →

Affected Software

OnlyOffice
Vulnerable Versions:
12.0, 12.1, 12.2, 12.3, 12.4, 12.5, 12.6, 12.7.0

Timeline

Official Publish: September 11th, 2025
Last Modified: September 11th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:C

Weaknesses (CWE)