Missing authorization in Synology Mail Server
Priority LOW 28CWE-862Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
A vulnerability in Synology Mail Server allows remote authenticated attackers to read and write non-sensitive settings, and disable some non-critical functions.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00381 32nd percentileScored 2026-11-07
Fix Fixed Synology Mail Server (Synology): 1.7.6-10676, 1.7.6-20676
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Synology | Synology Mail Server | before 1.7.6-10676; before 1.7.6-20676 | 1.7.6-10676, 1.7.6-20676 | Patch available | CNA |
- Synology Mail Server VendorSynology Affected before 1.7.6-10676; before 1.7.6-20676 Fixed in 1.7.6-10676, 1.7.6-20676 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:synology:mail_server:*:*:*:*:*:*:*:* | before 1.7.6-10676 | Vulnerable | Synology |
| cpe:2.3:o:synology:diskstation_manager:7.1:*:*:*:*:*:*:* | 7.1 | Running on | Synology |
| cpe:2.3:a:synology:mail_server:*:*:*:*:*:*:*:* | before 1.7.6-20676 | Vulnerable | Synology |
| cpe:2.3:o:synology:diskstation_manager:7.2:*:*:*:*:*:*:* | 7.2 | Running on | Synology |
- cpe:2.3:a:synology:mail_server:*:*:*:*:*:*:*:* Versions before 1.7.6-10676 Vulnerable ·Synology
- cpe:2.3:o:synology:diskstation_manager:7.1:*:*:*:*:*:*:* Versions 7.1 Running on ·Synology
- cpe:2.3:a:synology:mail_server:*:*:*:*:*:*:*:* Versions before 1.7.6-20676 Vulnerable ·Synology
- cpe:2.3:o:synology:diskstation_manager:7.2:*:*:*:*:*:*:* Versions 7.2 Running on ·Synology
Remediation
- Fix · CNA Synology Mail Server (Synology) Fixed in 1.7.6-10676, 1.7.6-20676
Timeline
- 2026-10-02 Threatist record created from CVE-2025-2848
- 2026-10-03 Alias added: GHSA-c2f4-r954-qp5r
References
Advisory 1
Sources
- CVE-2025-2848 · CVE Program
- CVE-2025-2848 · NVD
- FIRST EPSS
- GHSA-c2f4-r954-qp5r · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences