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CVE-2026-120740

hivex: hivex: Denial of Service via out-of-bounds read in big-data block processing

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Severity

Low

Red Hat Product Security

2

CVSS 3.1

Review impact separately from score.

Published · November 1, 2026

Updated · November 3, 2026

Description

A flaw was found in hivex. By supplying a specially crafted Windows registry hive file, an attacker can trigger an out-of-bounds memory read when hivex parses registry values containing malformed large data block lists. This issue can cause the application processing the registry file to crash, resulting in a Denial of Service (DoS).

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 2
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L

CWE-125 · Out-of-bounds Read