Libssh2
This hub aggregates every CVE we track for Libssh2, a product in the operating systems space. Use it to gauge the current risk picture and drill into individual advisories.
28
CVEs tracked
1
Critical
15
High
0
In CISA KEV
Severity distribution
HIGH15MEDIUM11LOW1CRITICAL1
Monthly trend
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0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
5
4
0
2024-092026-08
Latest CVEs
The 15 most recently published vulnerabilities affecting Libssh2.
- CVE-2026-66035libssh2 Heap Buffer Overflow via ETM Cipher Negotiation7.5
- CVE-2026-66034libssh2 Heap Out-of-Bounds Read via publickey subsystem7.5
- CVE-2026-66033libssh2 Integer Underflow DoS via AES-GCM Cipher Negotiation7.5
- CVE-2026-66032libssh2 Double-Free Heap Corruption via sftp_open()8.8
- CVE-2026-58051libssh2 - Free of Uninitialized Pointer in publickey List Cleanup6.5
- CVE-2026-58050libssh2 - Integer Overflow in publickey Subsystem Attribute Allocation7.0
- CVE-2025-15661libssh2 - Heap Buffer Over-read via sftp_symlink() in sftp.c6.5
- CVE-2026-55200libssh2 - Out-of-Bounds Write via Unchecked packet_length in transport.c8.1
- CVE-2026-55199libssh2 - Pre-Authentication DoS via SSH_MSG_EXT_INFO Handler5.9
- BDU:2026-06210Уязвимость функции _libssh2_ntohu32() библиотеки реализации протокола SSH2 Libssh2, позволяющая нарушителю вызвать отказ в обслуживании4.8
- BDU:2026-06225Уязвимость функции _libssh2_packet_add() компонента packet.c библиотеки реализации протокола SSH2 Libssh2, позволяющая нарушителю вызвать отказ в обслуживании5.9
- BDU:2026-06217Уязвимость компонента src/kex.c библиотеки реализации протокола SSH2 Libssh2, позволяющая нарушителю получить доступ к конфиденциальным данным3.7
- CVE-2026-7598libssh2 userauth.c userauth_password integer overflow7.3
- CVE-2023-48795The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (fr...5.9
- CVE-2020-22218An issue was discovered in function _libssh2_packet_add in libssh2 1.10.0 allows attackers to access out of bounds memory.7.5
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