GHSA-r8mh-x5qv-7gg2CriticalCVSS 8.1
libssh2 through 1.11.1, fixed in commit 7acf3df contains an out-of-bounds write vulnerability in...
🔗 CVE IDs covered (1)
📋 Description
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.
🔗 References (5)
- https://nvd.nist.gov/vuln/detail/CVE-2026-55200
- https://github.com/libssh2/libssh2/pull/2052
- https://github.com/libssh2/libssh2/commit/97acf3dfda80c91c3a8c9f2372546301d4a1a7a8
- https://www.vulncheck.com/advisories/libssh2-out-of-bounds-write-via-unchecked-packet-length-in-transport-c
- https://github.com/advisories/GHSA-r8mh-x5qv-7gg2