Every CVE Search/ Get API key

CVE-2020-27661

A divide-by-zero issue was found in dwc2_handle_packet in hw/usb/hcd-dwc2.c in the hcd-dwc2 USB...

6.5 MediumFix available

A divide-by-zero issue was found in dwc2_handle_packet in hw/usb/hcd-dwc2.c in the hcd-dwc2 USB host controller emulation of QEMU. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.31%Down 1.0 points since Jun 3, 2021
90%50%10%1%

What each source reports

NVD Score used 6.5

A divide-by-zero issue was found in dwc2_handle_packet in hw/usb/hcd-dwc2.c in the hcd-dwc2 USB host controller emulation of QEMU. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.

Record
CVE-2020-27661
CVSS 3.1
6.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CVSS 2.0
2.1 LowAV:L/AC:L/Au:N/C:N/I:N/A:P
Weakness
CWE-369
Updated
2026-11-02
CVE List No score

A divide-by-zero issue was found in dwc2_handle_packet in hw/usb/hcd-dwc2.c in the hcd-dwc2 USB host controller emulation of QEMU. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.

Record
CVE-2020-27661
Updated
2026-11-02
EUVDEUVD-2020-20168 No score

A divide-by-zero issue was found in dwc2_handle_packet in hw/usb/hcd-dwc2.c in the hcd-dwc2 USB host controller emulation of QEMU. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.

Record
EUVD-2020-20168
Updated
2026-11-03
GitHub AdvisoriesGHSA-pwg2-p5wp-g395 6.5

A divide-by-zero issue was found in dwc2_handle_packet in hw/usb/hcd-dwc2.c in the hcd-dwc2 USB...

A divide-by-zero issue was found in dwc2_handle_packet in hw/usb/hcd-dwc2.c in the hcd-dwc2 USB host controller emulation of QEMU. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.

Record
GHSA-pwg2-p5wp-g395
CVSS 3.1
6.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Weakness
CWE-369
Updated
2026-11-02
OSVALPINE-CVE-2020-27661 6.5

A divide-by-zero issue was found in dwc2_handle_packet in hw/usb/hcd-dwc2.c in the hcd-dwc2 USB host controller emulation of QEMU. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.

Record
ALPINE-CVE-2020-27661
CVSS 3.1
6.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Updated
2026-11-03
OSVBELL-CVE-2020-27661 6.5

CVE-2020-27661 does not affect BellSoft software

Record
BELL-CVE-2020-27661
CVSS 3.1
6.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Updated
2026-11-02
OSV 6.5

A divide-by-zero issue was found in dwc2_handle_packet in hw/usb/hcd-dwc2.c in the hcd-dwc2 USB host controller emulation of QEMU. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.

Record
CVE-2020-27661
CVSS 3.1
6.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2020-27661 6.5

A divide-by-zero issue was found in dwc2_handle_packet in hw/usb/hcd-dwc2.c in the hcd-dwc2 USB host controller emulation of QEMU. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.

Record
DEBIAN-CVE-2020-27661
CVSS 3.1
6.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
qemu
Alpine:v3.16
 before 5.2.0-r0
5.2.0-r0
qemu
Alpine:v3.17
 before 5.2.0-r0
5.2.0-r0
qemu
Alpine:v3.18
 before 5.2.0-r0
5.2.0-r0
qemu
Alpine:v3.19
 before 5.2.0-r0
5.2.0-r0
qemu
Alpine:v3.20
 before 5.2.0-r0
5.2.0-r0
qemu
Alpine:v3.21
 before 5.2.0-r0
5.2.0-r0
qemu
Alpine:v3.22
 before 5.2.0-r0
5.2.0-r0
qemu
Alpine:v3.23
 before 5.2.0-r0
5.2.0-r0
qemu
Alpine:v3.24
 before 5.2.0-r0
5.2.0-r0
qemu
Debian:12
 before 1:5.2+dfsg-1
1:5.2+dfsg-1
qemu
Debian:13
 before 1:5.2+dfsg-1
1:5.2+dfsg-1
qemu
Debian:14
 before 1:5.2+dfsg-1
1:5.2+dfsg-1

History

History
RecordedChangedSources
affected, aliases, referencesOSV
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-27661 is a medium vulnerability (CVSS 6.5) in Qemu, published June 2, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.31%, the 24th percentile. Fixed in qemu 5.2.0-r0.

References

Show 6 moreShow less
Pages All vulnerabilities Browse Docs Sources Guide Get API key
MoveEnter Open