Threats Tagged 'ubuntu-cve-2026-66033'
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Threats Tagged 'ubuntu-cve-2026-66033'
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libssh2 through 1.11.1, fixed in commit a2ed82d, contains a pre-authentication integer underflow vulnerability in the ssh2_cipher_crypt() function… (CVE-2026-66033)CVE-2026-66033 0 libssh2 through 1.11.1, fixed in commit a2ed82d, contains a pre-authentication integer underflow vulnerability in the ssh2_cipher_crypt() function in src/openssl.c that allows a malicious SSH server to crash any connecting client by negotiating AES-GCM ciphers during handshake. Attackers can exploit the underflow in the expression computing blocksize minus aadlen minus authentication tag length to trigger an out-of-bounds read and a memcpy call with a near-SIZE_MAX length argument, causing immediate process crash before any authentication occurs. Join the discussion | GCVE Database | 07/24/2026, 17:17:00 UTC Added: 09/02/2026, 15:49:07 UTC |
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