CVE-2021-1091

Severity: high (CVSS 7.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-07-22 · updated 2026-06-17
Weakness: CWE-59

Description

NVIDIA GPU Display driver for Windows contains a vulnerability where an unprivileged user can create a file hard link that causes the driver to overwrite a file that requires elevated privilege to modify, which could lead to data loss or denial of service.

Affected products

NVIDIA Guest driver: from 427.33 before 427.48; from 452.96 before 453.10; from 462.31 before 462.96 — fixed in 427.48, 453.10, 462.96

How to fix

Upgrade to a fixed version: NVIDIA Guest driver 427.48, 453.10, 462.96. Check the vendor advisory for mitigations.

References

https://nvidia.custhelp.com/app/answers/detail/a_id/5211
https://nvidia.custhelp.com/app/answers/detail/a_id/5211

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