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THREATINT
PUBLISHED

CVE-2025-54870

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



Description

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.

Reserved 2025-07-31 | Published 2025-08-05 | Updated 2025-08-05 | Assigner GitHub_M


HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-636: Not Failing Securely ('Failing Open')

Product status

>= 3.0.12, < 3.0.18
affected

References

github.com/...tun-ng/security/advisories/GHSA-m3jc-27c6-2wrf

github.com/...ommit/8c63982b6c487c52db1d56ab94c266f0bc857140

cve.org (CVE-2025-54870)

nvd.nist.gov (CVE-2025-54870)

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