CVE-2026-83742

The wolfSSL wolfSSH library (versions v1.4.11 through v1.5.0 ) is vulnerable on non-Windows platforms due to an unsigned integer underflow in the wstrncat() function within src/port.c. An authenticated remote attacker can trigger this by sending a crafted SFTP path to wolfSSH_RealPath() in src/ss...

CVE-2026-83742 wstrncat() unsigned integer underflow leads to an off-by-one null write in wolfSSH on non-Windows platforms

Unsigned integer underflow in wstrncat in src/port.c in wolfSSL wolfSSH from v1.4.11 through v1.5.0 on non-Windows platforms allows an authenticated remote attacker to write one out-of-bounds null byte past the end of a stack buffer by sending a crafted SFTP path. wolfSSHRealPath in src/ssh.c...