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libssh2 SFTP Heap Over-read CVE-2025-15661

June 29, 2026

CVE-2025-15661 is an SFTP heap over-read vulnerability in libssh2 with a CVSS 8.3 score.

Discovered from: Public PoC Released for Critical libssh2 CVE-2026-55200 Client-Side SSH Flaw

CVE-2025-15661heap over-readlibssh2SFTP

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