Vulnerability · Published May 27, 2026 · Assigned by synology
CVE-2025-12686
Critical 9.8
In plain English
A critical-severity buffer overflow in BeeStation OS from Synology. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.8% (higher than 86% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)2.8%top 13.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Synology | BeeStation OS | 1.3 – before 1.3.2-656481.2 – before 1.3.2-656481.1 – before 1.3.2-656481.0 – before 1.3.2-65648 |
Weakness: CWE-120 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- Synology-SA-25:12 BeeStation (PWN2OWN 2025) vendor-advisory