PT-2026-61858
CVE-2026-59843
·
Published
2026-07-21
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Updated
2026-09-07
Description by
CVSS 3.1
7.5
HighMetricsAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Name of the Vulnerable Software and Affected Versions
libssh (affected versions not specified)
Description
A flaw exists where a remote authenticated peer can advertise a zero maximum packet size within the SSH MSG CHANNEL OPEN message. This causes subsequent channel writes to enter an infinite loop and consume CPU resources, resulting in a denial of service.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
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