CVE-2026-0966

HIGH EPSS 43.4%
Published Mar 26, 20263mo ago · Modified Jun 17, 20261w ago
8.2 CVSS 3.1
High
Find Similar
Published Mar 26, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

Description

A flaw was found in libssh. The API function `ssh_get_hexa()` is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI (Generic Security Service Application Program Interface) authentication if the server's logging verbosity is set to `SSH_LOG_PACKET (3)` or higher. Successful exploitation could lead to a self-Denial of Service of the per-connection daemon process.

CVSS Details

Base Score
8.2
Exploitability
3.9
Impact
4.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Low
Availability High

Threat Intelligence

EPSS Exploit Probability
43.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-124

Affected Products 6

VendorProductVersionRange
libsshlibssh* <0.11.4
redhathardened_images*any
redhatopenshift_container_platform4.0any
redhatenterprise_linux8.0any
redhatenterprise_linux9.0any
redhatenterprise_linux10.0any

References 6

  • access.redhat.com https://access.redhat.com/errata/RHSA-2026:18160
  • access.redhat.com https://access.redhat.com/errata/RHSA-2026:18683
  • access.redhat.com https://access.redhat.com/errata/RHSA-2026:7067
    Vendor Advisory
  • access.redhat.com https://access.redhat.com/security/cve/CVE-2026-0966
    MitigationVendor Advisory
  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2433121
    Issue TrackingVendor Advisory
  • libssh.org https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/
    Release Notes

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.