CVE-2026-1584
highA flaw was found in gnutls.
Vendor / product: Gnu — gnutls
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.
CVSS
7.5
7.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (secalert@redhat.com)
Timeline (UTC)
Published: 2026-04-09 18:16
Modified: 2026-11-04 22:18
NVD status: Modified
Last synced 3 hours ago
Verified against the source API 2026-11-04 22:37 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
gnu / gnutls all versions
redhat / hardened_images all versions
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://access.redhat.com/security/cve/CVE-2026-1584
Vendor advisory: https://bugzilla.redhat.com/show_bug.cgi?id=2435258
Vendor advisory: https://access.redhat.com/security/cve/CVE-2026-1584
Vendor advisory: https://bugzilla.redhat.com/show_bug.cgi?id=2435258
References
- https://access.redhat.com/errata/RHSA-2026:7477 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2026-1584 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2435258 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:7477 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://access.redhat.com/security/cve/CVE-2026-1584 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://bugzilla.redhat.com/show_bug.cgi?id=2435258 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1584.json 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Data sources
NVD CVE API 2.0 — fetched 2026-11-04 22:37 UTC · record ↗