CVE-2026-33845 — HIGH (7.5)

Vulnerability 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 Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Gnu	Gnutls	-
Redhat	Openshift Container Platform	4.0
Redhat	Enterprise Linux	6.0

Related Weaknesses (CWE)

CWE-191

References

https://access.redhat.com/errata/RHSA-2026:13274Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-33845Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2450624Issue TrackingVendor Advisory

FAQ

What is CVE-2026-33845?

CVE-2026-33845 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...

How severe is CVE-2026-33845?

CVE-2026-33845 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-33845?

Check the references section above for vendor advisories and patch information. Affected products include: Gnu Gnutls, Redhat Openshift Container Platform, Redhat Enterprise Linux.