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CVE-2025-12686

Synology Beestation OS remote code execution

9.8 CRITICALEPSS 2.76%
  1. Published27 May 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Synology Beestation OS≥ 1.0 < 1.3.2

Remediation

Fixed in
Synology Beestation OS≥ 1.3.2

References

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Frequently asked

Is CVE-2025-12686 being actively exploited?

CVE-2025-12686 is not in the CISA KEV catalog. Its EPSS exploit probability is 2.76%.

How severe is CVE-2025-12686?

CVE-2025-12686 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 2.76% probability of exploitation.

Which products are affected by CVE-2025-12686?

Affected products include Synology Beestation OS.

How do I fix CVE-2025-12686?

Upgrade affected software to a fixed version, for example Synology Beestation OS 1.3.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-12686 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.