---
id: CVE-2025-2848
title: >-
  A vulnerability in Synology Mail Server allows remote authenticated attackers
  to read and write non-sensitive settings, and disable some non-critical
  functions.
summary: >-
  A vulnerability in Synology Mail Server allows remote authenticated attackers
  to read and write non-sensitive settings, and disable some non-critical
  functions.
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-862
vendor: synology
product: mail_server
affected:
  - mail_server < 1.7.6-10676
  - mail_server < 1.7.6-20676
patched:
  - mail_server 1.7.6-20676
published: '2025-12-04'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T23:10:00.463'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-2848'
references:
  - url: 'https://www.synology.com/en-global/security/advisory/Synology_SA_25_05'
    label: security@synology.com
tags:
  - nvd
epss: 0.00368
epssPercentile: 0.27964
ingestedAt: '2026-09-25T23:21:16.876Z'
---

## Overview

A vulnerability in Synology Mail Server allows remote authenticated attackers to read and write non-sensitive settings, and disable some non-critical functions.

## Affected

- `mail_server < 1.7.6-10676`
- `mail_server < 1.7.6-20676`

## Remediation

Upgrade past the affected range:

- `mail_server 1.7.6-20676`