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DEBIAN-CVE-2021-20203

LowCVSS 3.2 / 10
Published Feb 25, 2021·Last modified Jun 15, 2026
Affected Components(0)

No affected components available

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.

Risk Scores
Base Score
3.2

The vulnerability requires local access to the device to be exploited. It is easy for an attacker to exploit this vulnerability. An attacker needs high-level or administrative privileges. No user interaction is needed for the attacker to exploit this vulnerability. The vulnerability can affect other systems as well, not just the initial system. There is a low impact on the availability of the system.

Threat Intelligence
3.0

Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.

EPSS
0.59%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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