CVE-2026-33845 | BDVDB-2026-329796 Detail

Red HatRed Hat Enterprise Linux 10

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.

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact high. Attack vector: network.

Weaknesses#

CWE-191 Integer Underflow (Wrap or Wraparound)

References#

Show all 38

Exploit#

No public exploit known

History#

Version 12026-04-30Record published in the CVE List.
Version 22026-11-04Most recent update recorded in the CVE List.

Published

Published: 2026-04-30
Last modified: 2026-11-04

Vendor information

Vendor: Red Hat
Product: Red Hat Enterprise Linux 10

All Red Hat vulnerabilities

Score

7.5 High

EPSS

2.0%, Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 81.6.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
Not stated
Fixed
0:3.8.10-4.el10_2

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.5 High

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	None
Integrity	None
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).