CVE-2026-33845

CRITICAL EPSS 51.2%

Published Apr 30, 20262mo ago · Modified Jun 17, 20261w ago

9.1 CVSS 3.1

Critical

Published Apr 30, 2026 2mo ago

Last Modified Jun 17, 2026 1w ago

Description

A flaw in GnuTLS DTLS handshake parsing allows malformed fragments with zero length and non-zero offset, leading to an integer underflow during reassembly and resulting in an out-of-bounds read. This issue is remotely exploitable and may cause information disclosure or denial of service.

CVSS Details

Base Score

9.1

Exploitability

3.9

Impact

5.2

Vector string

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality High

Integrity None

Availability High

Threat Intelligence

EPSS Exploit Probability

51.2% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-191

Affected Products 7

Vendor	Product	Version	Range
gnu	gnutls	*	any
redhat	openshift_container_platform	4.0	any
redhat	enterprise_linux	6.0	any
redhat	enterprise_linux	7.0	any
redhat	enterprise_linux	8.0	any
redhat	enterprise_linux	9.0	any
redhat	enterprise_linux	10.0	any

References 8

access.redhat.com https://access.redhat.com/errata/RHSA-2026:13274

Vendor Advisory
access.redhat.com https://access.redhat.com/errata/RHSA-2026:20611
access.redhat.com https://access.redhat.com/errata/RHSA-2026:20612
access.redhat.com https://access.redhat.com/errata/RHSA-2026:20613
access.redhat.com https://access.redhat.com/errata/RHSA-2026:26319
access.redhat.com https://access.redhat.com/errata/RHSA-2026:26409
access.redhat.com https://access.redhat.com/security/cve/CVE-2026-33845

Vendor Advisory
bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2450624

Issue TrackingVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.