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.
Published: 2025-08-05
Score: 8.7 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-23579 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.
History

Tue, 05 Aug 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 05 Aug 2025 11:45:00 +0000

Type Values Removed Values Added
First Time appeared Leakingmemory
Leakingmemory vtun-ng
Rust-lang
Rust-lang vtun-ng
Vendors & Products Leakingmemory
Leakingmemory vtun-ng
Rust-lang
Rust-lang vtun-ng

Tue, 05 Aug 2025 00:45:00 +0000

Type Values Removed Values Added
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.
Title VTun-ng's failure to initialize encryption modules may cause reversion to plaintext
Weaknesses CWE-636
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}


Subscriptions

Leakingmemory Vtun-ng
Rust-lang Vtun-ng
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-08-05T14:56:26.901Z

Reserved: 2025-07-31T17:23:33.473Z

Link: CVE-2025-54870

cve-icon Vulnrichment

Updated: 2025-08-05T14:56:23.782Z

cve-icon NVD

Status : Deferred

Published: 2025-08-05T01:15:42.860

Modified: 2026-04-15T00:35:42.020

Link: CVE-2025-54870

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-08-05T11:38:47Z

Weaknesses