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.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Gnu
  • Gnu Sasl

No data.

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References
Link Providers
https://ftp.gnu.org/gnu/gsasl/ cve-icon
https://lists.debian.org/debian-security-announce/2026/msg00259.html cve-icon
https://lists.gnu.org/archive/html/help-gsasl/2026-06/msg00000.html cve-icon
https://www.gnu.org/software/gsasl/ cve-icon
History

Wed, 24 Jun 2026 11:30:00 +0000

Type Values Removed Values Added
Title Memory Disclosure via Unvalidated NTLM Challenge in GNU SASL

Wed, 24 Jun 2026 06:30:00 +0000

Type Values Removed Values Added
Title GNU SASL NTLM Short Challenge Memory Disclosure Vulnerability

Wed, 24 Jun 2026 01:30:00 +0000

Type Values Removed Values Added
Title GNU SASL NTLM Short Challenge Memory Disclosure Vulnerability

Tue, 23 Jun 2026 22:45:00 +0000

Type Values Removed Values Added
Title NTLM Client Short Challenge Improper Sanitization Leads to Memory Disclosure

Tue, 23 Jun 2026 20:15:00 +0000

Type Values Removed Values Added
Title NTLM Client Short Challenge Improper Sanitization Leads to Memory Disclosure

Tue, 23 Jun 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Tue, 23 Jun 2026 16:45:00 +0000

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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-06-23T16:18:29.150Z

Updated: 2026-06-23T17:31:49.772Z

Reserved: 2026-06-23T16:18:28.745Z

Link: CVE-2026-56968

cve-icon Vulnrichment

Updated: 2026-06-23T17:31:46.629Z

cve-icon NVD

No data.

cve-icon Redhat

No data.