CVE-2026-56968

Published Jun 23, 2026 CVSS 3.1 · 3.7 Low EPSS < 1% KEV · Not listed
Description
GNU SASL before 2.2.4 lacks sanitization of a short challenge in _gsasl_ntlm_client_step in the NTLM client, which could result in memory disclosure via a crafted server.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4707-1 gsasl security update
History
Type Values Removed Values Added
Title Memory Disclosure via Unvalidated NTLM Challenge in GNU SASL
Type Values Removed Values Added
Title Memory Disclosure via Unvalidated NTLM Challenge in GNU SASL
Type Values Removed Values Added
Title GNU SASL NTLM Short Challenge Memory Disclosure Vulnerability
Type Values Removed Values Added
Title GNU SASL NTLM Short Challenge Memory Disclosure Vulnerability
Type Values Removed Values Added
Title NTLM Client Short Challenge Improper Sanitization Leads to Memory Disclosure
Type Values Removed Values Added
Title NTLM Client Short Challenge Improper Sanitization Leads to Memory Disclosure
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description GNU SASL before 2.2.4 lacks sanitization of a short challenge in _gsasl_ntlm_client_step in the NTLM client, which could result in memory disclosure via a crafted server.
First Time appeared Gnu
Gnu gnu Sasl
Weaknesses CWE-839
CPEs cpe:2.3:a:gnu:gnu_sasl:*:*:*:*:*:*:*:*
Vendors & Products Gnu
Gnu gnu Sasl
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Jul 31, 2026, 5:10 AM
Reserved
Jun 23, 2026, 4:18 PM
Status
Modified
Published
Jun 23, 2026, 5:17 PM
Modified
Oct 25, 2026, 11:10 PM