7.5highHigh
CVE-2026-1584
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.
Exploitation status
- A vendor advisory or patch reference has been published.
What the metrics mean
- It is reachable over a network, without needing local access.
- For an attacker who can reach it, no special conditions are needed to exploit it.
- To exploit it, no account is needed.
- Beyond that, no action by a user is required.
Scoring
- CVSS
- 7.5 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness
- CWE-476
- Assigned by
- secalert@redhat.com
Dates
- Published
- 2026-04-09
- Last modified
- 2026-09-01
- Sources
- NVD
Affected products
- Gnu Gnutlsall versions
- Redhat Hardened Imagesall versions
As listed in the NVD configuration data. Not a statement about your estate.
References
- https://access.redhat.com/errata/RHSA-2026:7477
- https://access.redhat.com/security/cve/CVE-2026-1584
- https://bugzilla.redhat.com/show_bug.cgi?id=2435258
- https://access.redhat.com/errata/RHSA-2026:7477
- https://access.redhat.com/security/cve/CVE-2026-1584
- https://bugzilla.redhat.com/show_bug.cgi?id=2435258
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1584.json