SEPTEMBER 20, 2026
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Case File

CVE-2026-42493

HIGH · CVSS 7.5 EPSS 0.45%

Source: NVD + CISA KEV + EPSS · Published 2026-07-28 · Last synced 2026-08-27

CyberRota Analysis

AI-Generated

The vulnerability affects unspecified products that utilize certain operations which may take excessively long, leading to potential denial-of-service conditions. The impact includes increased resource consumption and the risk of system unresponsiveness, especially for larger memory guests. Organizations relying on these operations should prioritize addressing this issue to mitigate security risks associated with deprecated functionality.

CVE
CVE-2026-42493
Severity
HIGH
CVSS
7.5
EPSS
0.45%

Original NVD 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.