Remote Denial of Service Vulnerability in GnuTLS Affecting Red Hat Products
CVE-2026-1584

7.5HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
9 April 2026

What is CVE-2026-1584?

A vulnerability exists in GnuTLS that allows a remote attacker to exploit a crafted ClientHello message with an invalid Pre-Shared Key (PSK) binder during the TLS handshake process. This can result in a NULL pointer dereference, potentially causing the server to crash, leading to a remote denial of service. The flaw affects the stability and availability of services utilizing GnuTLS, particularly under malicious conditions.

References

https://access.redhat.com/security/cve/CVE-2026-1584
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2435258
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.