GNU SASL up to 2.2.3 numeric range comparison without minimum check

CVSS Meta Temp Score
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CTI Interest Score
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3.7$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in GNU SASL up to 2.2.3. The impacted element is an unknown function. Performing a manipulation results in numeric range comparison without minimum check. This vulnerability was named CVE-2026-56968. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in GNU SASL up to 2.2.3. It has been classified as problematic. This affects an unknown code. The manipulation with an unknown input leads to a numeric range comparison without minimum check vulnerability. CWE is classifying the issue as CWE-839. The product checks a value to ensure that it is less than or equal to a maximum, but it does not also verify that the value is greater than or equal to the minimum. This is going to have an impact on confidentiality. The summary by CVE is:

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.

It is possible to read the advisory at lists.gnu.org. This vulnerability is uniquely identified as CVE-2026-56968 since 06/23/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 2.2.4 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.7

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 3.7
CNA Vector (MITRE): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Numeric range comparison without minimum check
CWE: CWE-839 / CWE-118
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: SASL 2.2.4

Timelineinfo

06/23/2026 CVE reserved
06/23/2026 +0 days VulDB entry created
06/24/2026 +0 days Advisory disclosed
06/24/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: gnu.org

Advisory: lists.gnu.org
Status: Confirmed

CVE: CVE-2026-56968 (🔒)
GCVE (CVE): GCVE-0-2026-56968
GCVE (VulDB): GCVE-100-373083

Entryinfo

Created: 06/24/2026 00:13
Changes: 06/24/2026 00:13 (62)
Complete: 🔍
Cache ID: 216::103

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