CVE-2025-12686

Name: CVE-2025-12686
Creator: NVD / NIST
Published: 2026-05-27T09:16:26.357+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.76%

Last modified Jun 17, 2026

CVE-2025-12686 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 2.76% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

2.76%

84.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Synology	Beestation Os	>= 1.0, < 1.3.2

References

https://www.synology.com/en-global/security/advisory/Synology_SA_25_12Vendor Advisory

Timeline

Published: May 27, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-12686?

How severe is CVE-2025-12686?

CVE-2025-12686 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.76% probability of exploitation in the next 30 days.

How do I fix CVE-2025-12686?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-12686?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST