Critical severity · published May 27, 2026
CVE-2025-12686
Buffer copy without checking size of input ('Classic Buffer Overflow') vulnerability in AdminCenter in Synology BeeStation OS before 1.3.2-65648 allows remote attackers to execute…
9.8
CVSS
2.8%
EPSS
No
On KEV
Description
Buffer copy without checking size of input ('Classic Buffer Overflow') vulnerability in AdminCenter in Synology BeeStation OS before 1.3.2-65648 allows remote attackers to execute arbitrary code via unspecified vectors.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.8% · higher than 86% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BO
BeeStation OS · Synology
1.3 before 1.3.2-65648; 1.2 before 1.3.2-65648; 1.1 before 1.3.2-65648; 1.0 before 1.3.2-65648 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-12686
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-12686
Vendor Advisory
https://www.synology.com/en-global/security/advisory/Synology_SA_25_12
More from BeeStation OS
9.8
CVE-2024-10441
Improper encoding or escaping of output vulnerability in the system plugin daemon in Synology BeeStation OS (BSM) before 1.1-65374 and Synology DiskStation Manager (DSM) before…
5.3
CVE-2024-50629
Improper encoding or escaping of output vulnerability in the webapi component in Synology BeeStation OS (BSM) before 1.1-65374 and Synology DiskStation Manager (DSM) before…
5.3
CVE-2024-10445
Improper certificate validation vulnerability in the update functionality in Synology BeeStation OS (BSM) before 1.1-65374 and Synology DiskStation Manager (DSM) before…