CVE-2026-56968 - Vulnerability Details - OpenCVE

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.

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.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

GNU

GNU SASL

unaffected

Version	Status	Constraints
`0`	affected	< 2.2.4

No data.

No data.

No data.

Project Subscriptions

Vendors	Products
Gnu Subscribe	Gnu Sasl Subscribe

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

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

History

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		https://ftp.gnu.org/gnu/gsasl/ https://lists.debian.org/debian-security-announce/2026/msg00259.html https://lists.gnu.org/archive/html/help-gsasl/2026-06/msg00000.html https://www.gnu.org/software/gsasl/
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'}`

Projects

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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

Vulnrichment

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

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-839

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