What is CVE-2024-2873?

CVE-2024-2873 is a critical-severity vulnerability in Wolfssh, classified under Improper Authentication. CVSS score: 9.1/10. Published 2024-03-25.

How severe is CVE-2024-2873?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Auth bypass in Wolfssh

CVE-2024-2873

A vulnerability was found in wolfSSH's server-side state machine before versions 1.4.17. A malicious client could create channels without first performing user authentication, resulting in unauthorized access.

Vulnerability class: Broken Authentication

Published 2024-03-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.006 (48.1th percentile), scored 2026-10-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Wolfssh
Wolfssl Inc. Wolfssh — versions 0

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

github.com/wolfSSL/wolfssh/pull/670 (patch, Issue Tracking)
github.com/wolfSSL/wolfssh/pull/671 (patch, Issue Tracking)
www.wolfssl.com/docs/security-vulnerabilities/ (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2024-2873?: CVE-2024-2873 is a critical-severity vulnerability in Wolfssh, classified under Improper Authentication. CVSS score: 9.1/10. Published 2024-03-25.
How severe is CVE-2024-2873?: Critical severity. CVSS v3 base score is 9.1 out of 10.