CVE-2024-6409
CVSS v3
7
HIGH
Score EPSS
27.9 %
probabilité d’exploitation au 2026-10-05
CISA KEV
Non
exploitation connue
Exploitation
—
statut SSVC
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.
Détails techniques
- Publiée le
- 2024-07-08
Questions fréquentes
Qu’est-ce que CVE-2024-6409 ?
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.
CVE-2024-6409 est-elle activement exploitée ?
Aucune exploitation active de CVE-2024-6409 n’est confirmée. Son score EPSS était de 27.9 % au 2026-10-05, soit la probabilité estimée d’exploitation dans les 30 prochains jours.
Quel est le score CVSS de CVE-2024-6409 ?
CVE-2024-6409 a un score de base CVSS v3 de 7 (gravité HIGH).
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Classées par probabilité d’exploitation (EPSS).