Servers and applications
CVE-2025-26466
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…
- Severity
- Medium 5.9
- Published
- 28 Feb 2025
- Last changed
- 21 Oct 2026
- Added to UpHeron
- 21 Oct 2026
- Sources
- NVD
Affected software
| Software | Affected versions |
|---|---|
OpenSSHServers and applications · cpe:a:openbsd:openssh |
All 9 release lines
|