CVE-2025-12686 | Buffer copy without checking size of input ('Classic Buffer … | CVSS 9.8 CRITICAL

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.

Metadata

CVE ID: CVE-2025-12686
State: PUBLISHED
Assigner: synology
Reserved: 2025-11-04 06:21 UTC
Published: 2026-05-27 08:37 UTC
Last updated: 2026-05-27 15:13 UTC
Primary CWE: CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer …
Vendor / Product: Synology / BeeStation OS
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
Synology	BeeStation OS	—	1.3 < 1.3.2-65648, 1.2 < 1.3.2-65648, 1.1 < 1.3.2-65648, 1.0 < 1.3.2-65648 …

Weakness (CWE)

CWE	Source	Description
CWE-120	cna	Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (1)

Synology-SA-25:12 BeeStation (PWN2OWN 2025) https://www.synology.com/en-global/security/advisory/Synology_SA_25_12