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Vulnerability record · CVE-2018-16758 · published 10 October 2018

CVE-2018-16758: Tinc-vpn tinc missing authentication for critical function vulnerability

Tinc Vpn · Tinc

Missing message authentication in the meta-protocol in Tinc VPN version 1.0.34 and earlier allows a man-in-the-middle attack to disable the encryption of VPN packets.

5.9 CVSS 3.1 Medium EPSS 0.95% · top 40.4% CWE-306 · Missing authentication for critical function
5.9CVSS 3.1 base score, v2 4.3
0.95%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

Missing message authentication in the meta-protocol in Tinc VPN version 1.0.34 and earlier allows a man-in-the-middle attack to disable the encryption of VPN packets.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://tinc-vpn.org/security/ Vendor Advisory
http://www.tinc-vpn.org/git/browse?p=tinc%3Ba=commit%3Bh=e97943b7cc9c851ae36f5a41e2b6102faa74193f
https://www.debian.org/security/2018/dsa-4312 Third Party Advisory
https://www.starwindsoftware.com/security/sw-20190227-0003/ Third Party Advisory
http://tinc-vpn.org/security/ Vendor Advisory
http://www.tinc-vpn.org/git/browse?p=tinc%3Ba=commit%3Bh=e97943b7cc9c851ae36f5a41e2b6102faa74193f
https://www.debian.org/security/2018/dsa-4312 Third Party Advisory
https://www.starwindsoftware.com/security/sw-20190227-0003/ Third Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-16758), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.