CVE-2025-2848 Missing authorization in Synology Mail Server
Authenticated attackers can read/write non-sensitive settings and disable non-critical functions in Synology Mail Server due to missing authorization checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-2848?
CVE-2025-2848 is a medium-severity missing authorization vulnerability in Synology Mail Server, published on 4 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability in Synology Mail Server allows remote authenticated attackers to read and write non-sensitive settings, and disable some non-critical functions.
Weakness: CWE-862
Which versions are affected by CVE-2025-2848?
It affects 1 product.
Products include Synology Mail Server.
How do I fix CVE-2025-2848?
No fix has been published for CVE-2025-2848 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-2848 being exploited?
There is no known exploitation of CVE-2025-2848 in the wild and no public exploit code.
Sources
Also known as GHSA-c2f4-r954-qp5r.