CVE-2020-25723

Name: CVE-2020-25723
Creator: NVD / NIST
Published: 2020-12-02T01:15:12.733+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.2/10EPSS 0.36%

Last modified Jun 17, 2026

CVE-2020-25723 is a low-severity vulnerability rated 3.2/10 on the CVSS scale. A reachable assertion issue was found in the USB EHCI emulation code of QEMU. It could occur while processing USB requests due to missing handling of DMA memory map failure. EPSS estimates a 0.36% chance of exploitation in the next 30 days.

Description

A reachable assertion issue was found in the USB EHCI emulation code of QEMU. It could occur while processing USB requests due to missing handling of DMA memory map failure. A malicious privileged user within the guest may abuse this flaw to send bogus USB requests and crash the QEMU process on the host, resulting in a denial of service.

Metrics

CVSS 3.1

3.2/10

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

EPSS Probability

0.36%

27.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Qemu	Qemu	<= 5.1.1
Debian	Debian Linux	10.0

References

http://www.openwall.com/lists/oss-security/2020/12/22/1Mailing List, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1898579Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20201218-0004/Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/12/22/1Mailing List, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1898579Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20201218-0004/Third Party Advisory

Timeline

Published: Dec 2, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-25723?

How severe is CVE-2020-25723?

CVE-2020-25723 has a CVSS score of 3.2/10 (LOW severity). The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.

How do I fix CVE-2020-25723?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-25723?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST