CVE-2025-12686
CVE-2025-12686 is a critical-severity vulnerability in Synology Beestation Os with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- EPSS exploit prediction: 3% (85th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-209957
- Weakness: CWE-120
- Affected product: Synology Beestation Os
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2025-12686?
- 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.
- How severe is CVE-2025-12686?
- CVE-2025-12686 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2025-12686 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-12686?
- CVE-2025-12686 affects Synology Beestation Os. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-12686?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2025-12686 have an EU (EUVD) identifier?
- Yes. CVE-2025-12686 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209957.
- When was CVE-2025-12686 published?
- CVE-2025-12686 was published on 2026-05-27 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:synology:beestation_os:*:*:*:*:*:*:*:*
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