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Libssh2

2 CVEs tracked since 2015. Since Mar 2015, none of them reached CISA KEV.

Libssh2 CVEs per month

Mar 2015 to Oct 2026. Point at a month, or focus the strip and use the arrow keys.
Libssh2 CVEs per month, with the share now in CISA KEV
MonthCVEsIn CISA KEV
2015-0310
2015-040
2015-050
2015-061 or fewer
2015-070
2015-080
2015-090
2015-100
2015-110
2015-120
2016-010
2016-020
2016-030
2016-0410
2016-050
2016-060
2016-070
2016-08no snapshot
2016-090
2016-100
2016-11no snapshot
2016-120
2017-01no snapshot
2017-021 or fewer
2017-031 or fewer
2017-04no snapshot
2017-051 or fewer
2017-06no snapshot
2017-071 or fewer
2017-082 or fewer
2017-091 or fewer
2017-101 or fewer
2017-11no snapshot
2017-121 or fewer
2018-012 or fewer
2018-021 or fewer
2018-032 or fewer
2018-04no snapshot
2018-05no snapshot
2018-062 or fewer
2018-072 or fewer
2018-082 or fewer
2018-092 or fewer
2018-102 or fewer
2018-11no snapshot
2018-122 or fewer
2019-01no snapshot
2019-021 or fewer
2019-03no snapshot
2019-04no snapshot
2019-051 or fewer
2019-06no snapshot
2019-072 or fewer
2019-082 or fewer
2019-092 or fewer
2019-102 or fewer
2019-112 or fewer
2019-122 or fewer
2020-012 or fewer
2020-022 or fewer
2020-032 or fewer
2020-04no snapshot
2020-05no snapshot
2020-062 or fewer
2020-07no snapshot
2020-082 or fewer
2020-091 or fewer
2020-101 or fewer
2020-111 or fewer
2020-122 or fewer
2021-012 or fewer
2021-022 or fewer
2021-03no snapshot
2021-042 or fewer
2021-052 or fewer
2021-062 or fewer
2021-072 or fewer
2021-083 or fewer
2021-092 or fewer
2021-102 or fewer
2021-112 or fewer
2021-122 or fewer
2022-012 or fewer
2022-022 or fewer
2022-033 or fewer
2022-043 or fewer
2022-053 or fewer
2022-063 or fewer
2022-073 or fewer
2022-083 or fewer
2022-093 or fewer
2022-102 or fewer
2022-113 or fewer
2022-123 or fewer
2023-013 or fewer
2023-023 or fewer
2023-03no snapshot
2023-043 or fewer
2023-053 or fewer
2023-064 or fewer
2023-073 or fewer
2023-084 or fewer
2023-093 or fewer
2023-104 or fewer
2023-114 or fewer
2023-124 or fewer
2024-014 or fewer
2024-024 or fewer
2024-034 or fewer
2024-044 or fewer
2024-055 or fewer
2024-064 or fewer
2024-074 or fewer
2024-084 or fewer
2024-093 or fewer
2024-104 or fewer
2024-114 or fewer
2024-123 or fewer
2025-014 or fewer
2025-023 or fewer
2025-035 or fewer
2025-044 or fewer
2025-054 or fewer
2025-064 or fewer
2025-075 or fewer
2025-084 or fewer
2025-094 or fewer
2025-104 or fewer
2025-114 or fewer
2025-125 or fewer
2026-015 or fewer
2026-025 or fewer
2026-037 or fewer
2026-046 or fewer
2026-057 or fewer
2026-067 or fewer
2026-077 or fewer
2026-088 or fewer
2026-099 or fewer
2026-106 or fewer

Products

The products that kept showing up in Libssh2's monthly top three, with their CVEs summed over those months.

  1. Libssh222 months

Latest CVEs

The 15 most recently published vulnerabilities affecting Libssh2.

  1. CVE-2026-66035libssh2 Heap Buffer Overflow via ETM Cipher Negotiation7.5
  2. CVE-2026-66034libssh2 Heap Out-of-Bounds Read via publickey subsystem7.5
  3. CVE-2026-66033libssh2 Integer Underflow DoS via AES-GCM Cipher Negotiation7.5
  4. CVE-2026-66032libssh2 Double-Free Heap Corruption via sftp_open()8.8
  5. CVE-2026-58051libssh2 - Free of Uninitialized Pointer in publickey List Cleanup6.5
  6. CVE-2026-58050libssh2 - Integer Overflow in publickey Subsystem Attribute Allocation7.0
  7. CVE-2025-15661libssh2 - Heap Buffer Over-read via sftp_symlink() in sftp.c6.5
  8. CVE-2026-55200libssh2 - Out-of-Bounds Write via Unchecked packet_length in transport.c8.1
  9. CVE-2026-55199libssh2 - Pre-Authentication DoS via SSH_MSG_EXT_INFO Handler5.9
  10. CVE-2026-7598libssh2 userauth.c userauth_password integer overflow7.3
  11. 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
  12. 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
  13. CVE-2019-17498In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a...8.1
  14. CVE-2019-13115In libssh2 before 1.9.0, kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c has an integer overflow that could lead to an out-of-bounds read in the way packets are read from the ...8.1
  15. CVE-2019-3856An integer overflow flaw, which could lead to an out of bounds write, was discovered in libssh2 before 1.8.1 in the way keyboard prompt requests are parsed. A remote attacker who compromises a SSH ...8.8

The record

Peak rank
#102 in Mar 2015
Busiest month shown
Mar 2015, 1 CVEs
Months with a KEV entry
0 since Mar 2015
Monthly snapshots
2 since 2015
Libssh2's full record, month by month