CVE-2025-26465
đļ mediumSummary
A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how OpenSSH mishandles error codes in specific conditions when verifying the host key. For an attack to be considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning the attack complexity high.
CVSS Score
6.8
Medium
EPSS Score
64.4
Exploit Probability
Published Date
2025-02-18
First Seen: 2026-01-05
đ Relative Risk Intelligence
This CVE is Lower Risk - more severe than 48.8% of all 329,456 vulnerabilities in our database.
#168,698
Below average severity
Severity Percentile
đ¯ CISA SSVC Assessment Updated: Feb 19, 2025
đ Exploitation Status
Poc
Proof-of-concept available
âī¸ Automatable
NO
Requires human interaction
đĨ Technical Impact
Total
Complete system compromise possible
SSVC data provided by
CISA
Last Modified
2025-11-03
Source
NVD đ
CVSS Vector 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
CWE IDs (Weakness Types)