CVE-2025-54870

HIGH8.7

VTun-ng's failure to initialize encryption modules may cause reversion to plaintext

Published Aug 5, 2025

Modified 7 months ago

Details

VTun-ng is a Virtual Tunnel over TCP/IP network. In versions 3.0.17 and below, failure to initialize encryption modules might cause reversion to plaintext due to insufficient error handling. The bug was first introduced in VTun-ng version 3.0.12. This is fixed in version 3.0.18. To workaround this issue, avoid blowfish-256.

References

WEB

https://github.com/leakingmemory/vtun-ng/commit/8c63982b6c487c52db1d56ab94c266f0bc857140

WEB

https://github.com/leakingmemory/vtun-ng/security/advisories/GHSA-m3jc-27c6-2wrf

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2025-54870

CVSS Analysis

CVSS v4.0

8.7

Exploitability

Attack Vector