9.8

CVE-2025-12686: synology beestation_os Classic Buffer Overflow

CVSS: 9.8v3.1CriticalAnalyzed
Published 27-05-2026Last modified 27-05-2026
Open JSON

Vulnerability summary

CVE-2025-12686 is a critical (CVSS 9.8) Classic Buffer Overflow vulnerability in synology beestation_os. EPSS estimates a 2.76% chance of exploitation in the next 30 days, higher than 86% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
2.76%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 27-05-2026
    PublishedVulnerability first disclosed.
  2. 27-05-2026
    Last modifiedVulnerability information updated.

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 metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

2.76%

Chance of exploitation in the next 30 days

Percentile

86%

Versus all other CVEs

30-day change

0.00 pp

From 2.76% on 19-09-2026

19-09-202619-10-2026
EPSS score
2.76%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Synology1 product
  • 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 | ≥ 1.0, < 1.3.2

1 vendor · 1 product

References

1 links