# CVE-2026-1584: gnutls28: A flaw was found in gnutls

CVE-2026-1584 is fixed in gnutls28 on 1 platform by DEBIAN-CVE-2026-1584 (version 3.8.12-1), released April 9, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-1584
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0137
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 9, 2026

## Description

A flaw was found in gnutls. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted ClientHello message with an invalid Pre-Shared Key (PSK) binder value during the TLS handshake. This can lead to a NULL pointer dereference, causing the server to crash and resulting in a remote Denial of Service (DoS) condition.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | gnutls28 Debian 14 | 3.8.12-1 | [DEBIAN-CVE-2026-1584](https://patchblox.com/security/data/fix/linux/debian-cve-2026-1584.md) | Apr 9, 2026 |

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Data as of 2026-11-08T13:06:02Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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