CVE-2026-33845

⚠️ high

Summary

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 Score

7.5

High

EPSS Score

0.0

Exploit Probability

Published Date

2026-04-30

First Seen: 2026-05-03

📊 Relative Risk Intelligence

This CVE is Moderate Risk - more severe than 69.1% of all 322,079 vulnerabilities in our database.

#99,646

Above average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: Apr 30, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

YES

Can be exploited automatically

💥 Technical Impact

Partial

Limited system impact

SSVC data provided by CISA

Last Modified 2026-05-05

Source NVD 🔗

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

CWE IDs (Weakness Types)

CWE-191

📦 Affected Products 7

Vendor	Product	Status	Affected Versions
gnu	gnutls	Affected	v-
redhat	enterprise_linux	Affected	v10.0
redhat	enterprise_linux	Affected	v6.0
redhat	enterprise_linux	Affected	v7.0
redhat	enterprise_linux	Affected	v8.0
redhat	enterprise_linux	Affected	v9.0
redhat	openshift_container_platform	Affected	v4.0

🔗 References 3

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

Vendor Advisory

https://access.redhat.com/security/cve/CVE-2026-33845

Vendor Advisory

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

Issue Tracking Vendor Advisory

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-42010	⚠️ high	7.1	0.2	A flaw was found in gnutls. Servers configured with RSA-PSK (Rivest–Shamir–Adleman – Pre-Shared Key) wrongfully ma...	2026-05-07
CVE-2026-34000	🔶 medium	6.1	0.0	A flaw was found in the X.Org X server. This out-of-bounds read vulnerability in the XKB geometry processing, specifical...	2026-05-05
CVE-2026-34002	🔶 medium	6.1	0.0	A flaw was found in the X.Org X server. This vulnerability, an out-of-bounds read, affects the XKB (X Keyboard Extension...	2026-05-05
CVE-2026-3832	ℹ️ low	3.7	0.0	A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online ...	2026-04-30
CVE-2026-3833	🔶 medium	6.5	0.1	A flaw was found in gnutls. This vulnerability occurs because gnutls performs case-sensitive comparisons of `nameConstra...	2026-04-30
CVE-2026-7309	🔶 medium	4.3	0.0	A flaw was found in the OpenShift Container Platform build system. A user with the `edit` ClusterRole can inject arbitra...	2026-04-28

These CVEs affect the same products