What is CVE-2016-7145?

CVE-2016-7145 is a critical-severity vulnerability in Nefarious2 Project, classified under Improper Authentication. CVSS score: 9.8/10. Published 2017-03-07.

How severe is CVE-2016-7145?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Nefarious2 Project

CVE-2016-7145

The m_authenticate function in ircd/m_authenticate.c in nefarious2 allows remote attackers to spoof certificate fingerprints and consequently log in as another user via a crafted AUTHENTICATE parameter.

Vulnerability class: Broken Authentication

Published 2017-03-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (57.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 57.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Nefarious2 Project — versions 2.0

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

github.com/evilnet/nefarious2/commit/f50a84bad996d438e7b31b9e74c32a41e43f8be5 (Patch, Third Party Advisory, Issue Tracking)
www.openwall.com/lists/oss-security/2016/09/05/9 (mailing-list, Patch, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2016-7145?: CVE-2016-7145 is a critical-severity vulnerability in Nefarious2 Project, classified under Improper Authentication. CVSS score: 9.8/10. Published 2017-03-07.
How severe is CVE-2016-7145?: Critical severity. CVSS v3 base score is 9.8 out of 10.