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CVE-2026-58050: libssh2 through 1.11.1 (inclusive), 0 through 1.11.1
CVE-2026-58050. CVSS 3.1 base score 7.5 (HIGH, NVD). EPSS 0.00444 (percentile 0.3768), scored 24-Oct-2026.
Affected technology
libssh2 · through 1.11.1 (inclusive)
libssh2
libssh2 · 0 through 1.11.1
libssh2
Description’s affected range: through 1.11.1 reads an attacker-controlled 32-bit attribute count from a publickey-subsystem response and uses it in the allocation num_attrs * sizeof(libssh2_publickey_attribute) without bounds checking
Component: Not specified by the source
Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required
What an attacker can do
Vendor/CNA’s CVSS 4.0 assessment (base score 8.3/10) rates confidentiality and integrity impact as low; availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.
- CWE
- CWE-190
- CCR priority
- 30.1 /100 (P4)
- CVSS 3.1
- 7.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · NVD
- EPSS
- 0.00444 · percentile 0.3837 · 2026-10-25
- KEV
- no
Provenance
- FIRST EPSS daily exploit-probability · Source record · observed 2026-10-25 19:52:47.952465+00:00 UTC
- NVD CVE API 2.0 · Source record · observed 2026-10-25 19:51:06.643138+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-58050.html