CVE-2025-26466 – OpenSSH Memory Consumption Denial of Service Vulnerability

The following table lists the changes that have been made to the
CVE-2025-26466 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Feb. 28, 2025

    Action Type Old Value New Value
    Added Description A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client key exchange has finished. A malicious client may keep sending such packages, leading to an uncontrolled increase in memory consumption on the server side. Consequently, the server may become unavailable, resulting in a denial of service attack.
    Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added CWE CWE-400
    Added Reference https://access.redhat.com/security/cve/CVE-2025-26466
    Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2345043
    Added Reference https://www.qualys.com/2025/02/18/openssh-mitm-dos.txt
  • CVE Modified
    by af854a3a-2127-422b-91ae-364da2661108

    Feb. 28, 2025

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20250228-0002/
Share the Post:

Related Posts