🛡️ CVE-2024-6409
🟠 CVSS 7.0 — High ✅ No Known Exploit CWE-364 NVD
7.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A race condition vulnerability was discovered in how signals are handled by OpenSSH's server (sshd). If a remote attacker does not authenticate within a set time period, then sshd's SIGALRM handler is called asynchronously. However, this signal handler calls various functions that are not async-signal-safe, for example, syslog(). As a consequence of a successful attack, in the worst case scenario, an attacker may be able to perform a remote code execution (RCE) as an unprivileged user running the sshd server.

Details

Severity HIGH
CVSS Score 7.0
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
CWE CWE-364
Public Exploit ✅ No
Source NVD
Published 2024-07-08
Updated 2026-06-02
Modified 2026-04-15
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

References

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