CVE-2025-12686 PUBLISHED

Assigner: synology
Reserved: 04.11.2025 Published: 27.05.2026 Updated: 27.05.2026

Buffer copy without checking size of input ('Classic Buffer Overflow') vulnerability in AdminCenter in Synology BeeStation Manager (BSM) before 1.3.2-65648 and Synology BeeStation OS before 1.3.2-65648 allows remote attackers to execute arbitrary code via unspecified vectors.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 9.8

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Synology
Product	BeeStation Manager (BSM)
Versions	Default: affected affected from 1.2 to 1.3.2-65648 (excl.) affected from 1.1 to 1.3.2-65648 (excl.) affected from 1.0 to 1.3.2-65648 (excl.) unknown from 0 to 1.0 (excl.)

Vendor	Synology
Product	BeeStation OS
Versions	Default: affected affected from 1.3 to 1.3.2-65648 (excl.) unknown from 0 to 1.3 (excl.)

Credits

@Tek_7987 & @_Anyfun (@Synacktiv) finder

References

Synology-SA-25:12 BeeStation (PWN2OWN 2025)

Problem Types

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE