# CVE-2026-56968: gsasl: GNU SASL before 2.2.4 lacks sanitization of a short challenge in _gsasl_ntlm_client_step in the NTLM client, which co...

CVE-2026-56968 is fixed in gsasl on 1 platform, first by DEBIAN-CVE-2026-56968, released June 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-56968
- Priority: Routine
- CVSS: 5.3 (medium)
- EPSS: 0.0041
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 23, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | gsasl Debian 12.15 (bookworm) | 2.2.0-1+deb12u2 | [DEBIAN-CVE-2026-56968](https://patchblox.com/security/data/fix/linux/debian-cve-2026-56968.md) | Jun 24, 2026 |
| Linux | gsasl Debian 13.5 (trixie) | 2.2.2-1.1+deb13u2 | [DEBIAN-CVE-2026-56968](https://patchblox.com/security/data/fix/linux/debian-cve-2026-56968.md) | Jun 24, 2026 |
| Linux | gsasl Debian 14 | 2.2.4-1 | [DEBIAN-CVE-2026-56968](https://patchblox.com/security/data/fix/linux/debian-cve-2026-56968.md) | Jun 24, 2026 |
| Linux | gsasl opensuse-leap 16.0 | 2.2.1-160000.4.1 | [OPENSUSE-SU-2026:21303-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21303-1.md) | Jul 10, 2026 |
| Linux | gsasl sles 16.0 | 2.2.1-160000.4.1 | [SUSE-SU-2026:22631-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22631-1.md) | Jul 10, 2026 |

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Data as of 2026-11-10T07:50:38Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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