Buffer overflow in Synology Beestation Manager (Bsm)
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 arbitrary code via unspecified vectors.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.028 (86.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000
Affected products
- Synology Beestation Manager (Bsm) — versions 1.2, 1.1, 1.0
- Synology Beestation OS — versions 1.0, 1.3, 1.1
- Synology Beestation OS
Weakness classification (CWE)
References
- www.synology.com/en-global/security/advisory/Synology_SA_25_12 (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-12686?
- CVE-2025-12686 is a critical-severity vulnerability in Synology Beestation Manager (Bsm), classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2026-05-27.
- How severe is CVE-2025-12686?
- Critical severity. CVSS v3 base score is 9.8 out of 10.