VDB
DEBIAN-CVE-2025-26466
DEBIAN-CVE-2025-26466
PUBLISHED
CVSS 5.900000095367432 MEDIUM
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.
Risk Scores
CVSS 3.1
5.900000095367432
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | openssh | 0, 0 |
| Debian:14 | openssh | 0, 0 |
Exploit Intelligence
- poc for CVE-2025-26466 (github-poc-repo)
- poc for CVE-2025-26466 (github-poc)
- CVE-2025-26466 - SSH Ping DoS Ruby module for Metasploit Framework (github-poc)
- The OpenSSH client and server are vulnerable to a pre-authentication DoS attack between versions 9.5p1 to 9.9p1 (inclusive) that causes memory and CPU consumption (github-poc)
- CVE-2025-26465.yaml (github-poc)
- macos_v2_generated.go (github-poc)
- macos_v1_generated.go (github-poc)
- package.py (github-poc)
- ghost_report_20260112_192608.json (github-poc)
- ghost_report_20260112_175243.json (github-poc)
…and 1 more exploits
Timeline
- Feb 28, 2025 CVE Published
- Apr 28, 2026 CVE Updated