CVE-2026-15370
highA flaw was found in libssh.
Vendor / product: Libssh — libssh
A flaw was found in libssh. During SFTP server directory listing, the longname field is constructed with unsafe concatenation into a fixed-size stack buffer. When a client causes the server to list attacker-controlled filenames, sufficiently long names can overflow that stack buffer and may lead to crashes or possible code execution on the server.
CVSS
7.3
7.3 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-07-21 09:16
Modified: 2026-11-05 17:18
NVD status: Analyzed
Last synced 8 hours ago
Verified against the source API 2026-11-05 17:49 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
libssh / libssh ≥0.11.0 <0.11.5, 0.12.0
redhat / hardened_images all versions
redhat / enterprise_linux 10.0, 10.2
redhat / enterprise_linux_for_els 10.2
redhat / enterprise_linux_for_eus 10.2
redhat / enterprise_linux_for_ibm_z_systems 10.0, 10.2
redhat / enterprise_linux_for_ibm_z_systems_els 10.2
redhat / enterprise_linux_for_ibm_z_systems_eus 10.2
redhat / enterprise_linux_for_power_little_endian 10.0, 10.2
redhat / enterprise_linux_for_power_little_endian_els 10.2
redhat / enterprise_linux_for_power_little_endian_eus 10.2
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://access.redhat.com/errata/RHSA-2026:47768
Vendor advisory: https://access.redhat.com/errata/RHSA-2026:55855
Vendor advisory: https://access.redhat.com/security/cve/CVE-2026-15370
Vendor advisory: https://bugzilla.redhat.com/show_bug.cgi?id=2499049
References
- https://access.redhat.com/errata/RHSA-2026:47768 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:55855 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2026-15370 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2499049 secalert@redhat.com
Data sources
NVD CVE API 2.0 — fetched 2026-11-05 17:49 UTC · record ↗