CVE-2025-4679 Information disclosure in Active Backup for Microsoft 365
Remote authenticated attackers can obtain sensitive information from Synology Active Backup for Microsoft 365.
- 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-2025-4679?
CVE-2025-4679 is a medium-severity vulnerability in Synology Active Backup for Microsoft 365, published on 16 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability in Synology Active Backup for Microsoft 365 allows remote authenticated attackers to obtain sensitive information via unspecified vectors.
Weakness: CWE-522
Which versions are affected by CVE-2025-4679?
It affects 1 product.
Products include Synology Active Backup for Microsoft 365.
How do I fix CVE-2025-4679?
No fix has been published for CVE-2025-4679 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-4679 being exploited?
There is no known exploitation of CVE-2025-4679 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-544f-g2r6-4rv9.