CVE-2026-42488

Name: CVE-2026-42488
Creator: NVD / NIST
Published: 2026-06-18T14:17:25.41+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 0.35%

Last modified Jun 22, 2026

CVE-2026-42488 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. Some shadow paging errors paths will switch the page-tables without updating the currently running vCPU reference. This causes a mismatch between the loaded page-tables and the mapcache metadata which can lead to corruption of the mapcache.. EPSS estimates a 0.35% chance of exploitation in the next 30 days.

Description

Some shadow paging errors paths will switch the page-tables without updating the currently running vCPU reference. This causes a mismatch between the loaded page-tables and the mapcache metadata which can lead to corruption of the mapcache.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

0.35%

27.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

References

Timeline

Published: Jun 18, 2026
Last Modified: Jun 22, 2026
Status: Deferred

Frequently Asked Questions

What is CVE-2026-42488?

How severe is CVE-2026-42488?

CVE-2026-42488 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.35% probability of exploitation in the next 30 days.

How do I fix CVE-2026-42488?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-42488?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST