CVE-2021-20203

LowCVSS 3.2/10Last modified Jun 17, 2026

Description

An integer overflow issue was found in the vmxnet3 NIC emulator of the QEMU for versions up to v5.2.0. It may occur if a guest was to supply invalid values for rx/tx queue size or other NIC parameters. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.

Metrics

CVSS 3.1 3.2/10CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L

Weakness enumeration

CWE-190

Affected software

No affected versions have been published.

Timeline

Published
Feb 25, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-20203: Low severity, CVSS 3.2 | Vulnix