CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCVE-2026-59843
Medium (6.5). EPSS 0.6% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 0.6% chance of exploitation in the next 30 days; higher than 47% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-835, CWE-400
- Published
- Modified
- Record from
- the NVD, synced
Affected
- libssh:libssh
- redhat:enterprise_linux
- redhat:hardened_images