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CVE-2026-59843

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CVSS 3.1
6.5 medium
EPSS
<1%p45
Published
()
Modified
Description

A flaw was found in libssh. A remote authenticated peer can advertise a zero maximum packet size in SSH_MSG_CHANNEL_OPEN, causing later channel writes to loop indefinitely and consume CPU, leading to denial of service.

Vendors
libsshredhat
Products
libssh, hardened images, enterprise linux
Weakness
CWE-835, CWE-400
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD CVE.org GitHub PoCs EPSS (0.6%)

In the news

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