Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2026-42493

7.5 · HIGH

Addressing certain issues, in particular related to operations which may take excessively long and therefore would need preemption, has turned out overly costly.

Published Jul 28, 2026CWE-400EPSS 0.45%

Overview

CVE-2026-42493 is a high-severity vulnerability. It was published on July 28, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Addressing certain issues, in particular related to operations which may

take excessively long and therefore would need preemption, has turned out

overly costly. Since alternatives (HVM/PVH: HAP, PV: shim) are commonly

available, the decision was to deprecate the functionality, while still

retaining it for people to use at their own (security) risk. Memory-wise

small enough guests may still be okay to run.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refxenbits.xenproject.org/xsa/advisory-495.htmlRefwww.openwall.com/lists/oss-security/2026/07/28/12Refxenbits.xen.org/xsa/advisory-495.html

How CyberStrike helps

Frequently asked questions

What is CVE-2026-42493?

CVE-2026-42493 is a high-severity vulnerability. It was published on July 28, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-42493?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-42493?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-42493?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-42493 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related HIGH CVEs from 2026

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999