Is CVE-2023-46840 actively exploited?

CVE-2023-46840 has no public evidence of in-the-wild exploitation as of 2026-01-13.

What is the CVSS score for CVE-2023-46840?

CVE-2023-46840 has a CVSS score of 4.1 (MEDIUM severity). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N.

How do I patch CVE-2023-46840?

Patch guidance is available from xen security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2023-46840.

Which products are affected by CVE-2023-46840?

2 products: xen xen, fedoraproject fedora.

CVE-2023-46840 - remediation guidance & executive summary

Description

Incorrect placement of a preprocessor directive in source code results in logic that doesn't operate as intended when support for HVM guests is compiled out of Xen.

CVSS Metrics

Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N
Attack Vector: local
Complexity: high
Privileges: high
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: high
Availability: none
Weaknesses: CWE-670

Metadata

Primary Vendor: XEN
Published: 3/20/2024
Last Modified: 1/13/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2023-46840

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary