cvedb.io
CVE-2026-55200
HIGH · CVSS 8.1
EPSS exploitation probability: 55%
Published 2026-06-17T20:17:28.667 · Last modified 2026-06-24T17:17:29.693

Summary

libssh2 through 1.11.1, fixed in commit 7acf3df contains an out-of-bounds write vulnerability in ssh2_transport_read() that fails to enforce upper bounds on packet_length field. Remote attackers can send crafted SSH packets with excessively large packet_length values to corrupt heap memory and achieve remote code execution.

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References

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