CVE-2026-55200: Critical libssh2 Flaw Opens Remote Code Execution Path
Posted: Mon Jun 29, 2026 8:18 pm
CVE ID: CVE-2026-55200
Published: June 17, 2026
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.
Severity: 9.2 | CRITICAL
More Information:
https://cvefeed.io/vuln/detail/CVE-2026-55200
https://thecyberthrone.in/2026/06/29/cv ... tion-path/
Published: June 17, 2026
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.
Severity: 9.2 | CRITICAL
More Information:
https://cvefeed.io/vuln/detail/CVE-2026-55200
https://thecyberthrone.in/2026/06/29/cv ... tion-path/