CVE-2025-25567

SoftEther VPN 5.02.5187 is vulnerable to Buffer Overflow in Internat.c via the UniToStrForSingleChars function. NOTE: the Supplier disputes this because the behavior only enables a local user to attack himself through the UI,
Classic Buffer Overflow
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
mitreCNA
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CISA-ADPADP
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 24%
VendorProductVersion
softethervpn
5.02.5187
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://filecenter.softether-upload.com/d/250715_001_79538/CVE-2025-25567.pdf
https://lzydry.github.io/CVE-2025-25567/
https://lzydry.github.io/CVE-2025-25567/