CVE-2024-6387
Openssh: regresshion - race condition in ssh allows rce/dos
- Published
- Jul 1, 2024
- Updated
- Oct 15, 2026
- Assigning CNA
- redhat
- Evidence observed
- Apr 22, 2025
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HHigh · next 30 days
- Percentile
- 99.9%
- Model date
- Oct 17, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger it by failing to authenticate within a set time period.
Sources
- regreSSHiveExploit
rewrited SSH Exploit for CVE-2024-6387 (regreSSHion)
- cve-2024-6387-pocExploit
a signal handler race condition in OpenSSH's server (sshd)
- checker-CVE-2024-6387Scanner
Python scanner that checks hosts for the OpenSSH regreSSHion vulnerability (CVE-2024-6387)
- cve-2024-6387-pocExploit
32-bit PoC for CVE-2024-6387 — mirror of the original 7etsuo/cve-2024-6387-poc
Responsible use
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