CVE-2024-39894

Advisory lineage Upstream: 0 Downstream: 6
Deferred
Published: 02 Jul 2024, 00:00
Last modified:04 Nov 2025, 16:12

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.5 HIGH
v3.1 (cve.org)
EPSS Score
2.95% LOW
3% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

02 Jul 2024, 00:00
Published
Vulnerability first disclosed
04 Nov 2025, 16:12
Last Modified
Vulnerability information updated

Description

OpenSSH 9.5 through 9.7 before 9.8 sometimes allows timing attacks against echo-off password entry (e.g., for su and Sudo) because of an ObscureKeystrokeTiming logic error. Similarly, other timing attacks against keystroke entry could occur.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 2.95%• Percentile: 87%

Techniques & Countermeasures

  • CWE-367•Time-of-check Time-of-use (TOCTOU) Race Condition

    The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.

References (12)