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

CVE ID : CVE-2025-26466
Published : Feb. 28, 2025, 10:15 p.m. | 40 minutes ago
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.
Severity: 5.9 | MEDIUM
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