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Mend.io Vulnerability Database

CVE-2025-26466

Date: February 28, 2025

In OpenSSH versions 9.5p1 to 9.9p1, sshd(8) was subject to a pre-authentication memory/CPU denial-of-service attack using SSH2_MSG_PING packets. This attack may be mitigated using the existing PerSourcePenalties option.

Severity Score

5.9

Related Resources (14)

Url: https://access.redhat.com/security/cve/CVE-2025-26466

Url: https://security.netapp.com/advisory/ntap-20250228-0002/

Url: https://nvd.nist.gov/vuln/detail/CVE-2025-26466

Url: https://ubuntu.com/security/CVE-2025-26466

Url: https://bugzilla.redhat.com/show_bug.cgi?id=2345043

Url: https://www.qualys.com/2025/02/18/openssh-mitm-dos.txt

Url: https://www.openwall.com/lists/oss-security/2025/02/18/1

Url: https://www.openssh.com/security.html

Url: https://www.openwall.com/lists/oss-security/2025/02/18/4

Url: https://security.alpinelinux.org/vuln/CVE-2025-26466

Url: https://bugzilla.suse.com/show_bug.cgi?id=1237041

Url: https://security-tracker.debian.org/tracker/CVE-2025-26466

Url: https://seclists.org/oss-sec/2025/q1/144

Url: https://www.mend.io/vulnerability-database/CVE-2025-26466

Severity Score

5.9

Weakness Type (CWE)

Uncontrolled Resource Consumption

CWE-400

Allocation of Resources Without Limits or Throttling

CWE-770

CVSS v3.1

Base Score:	5.9
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	HIGH
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	HIGH

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CVE-2025-26466

Date: February 28, 2025

Severity Score

Related Resources (14)

Severity Score

Weakness Type (CWE)

CVSS v3.1

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