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.
CVE-2020-27661
MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence
Score 6.5 from GitHub Security Advisory published 2022-05-24. NVD baseline CVSS 6.5; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.5Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.5
- EG Score
- 6.5(medium)
- EPSS
- 23.3%
- KEV
- Not listed
Published
June 2, 2021
Last Modified
November 21, 2024
References (10)
- cve@mitrehttps://bugzilla.redhat.com/show_bug.cgi?id=1890653
- cve@mitrehttps://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=bea2a9e3e00b275dc40cfa09c760c715b8753e03
- cve@mitrehttps://lists.nongnu.org/archive/html/qemu-devel/2020-10/msg04263.html
- cve@mitrehttps://security.netapp.com/advisory/ntap-20210720-0010/
- cve@mitrehttps://www.mail-archive.com/debian-bugs-dist%40lists.debian.org/msg1770368.html
- af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1890653
- af854a3a-2127-422b-91ae-364da2661108https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=bea2a9e3e00b275dc40cfa09c760c715b8753e03
- af854a3a-2127-422b-91ae-364da2661108https://lists.nongnu.org/archive/html/qemu-devel/2020-10/msg04263.html
- af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20210720-0010/
- af854a3a-2127-422b-91ae-364da2661108https://www.mail-archive.com/debian-bugs-dist%40lists.debian.org/msg1770368.html
Frequently asked(5)
What is CVE-2020-27661?
CVE-2020-27661 is a medium vulnerability published on June 2, 2021. A divide-by-zero issue was found in dwc2handlepacket 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.
When was CVE-2020-27661 disclosed?
CVE-2020-27661 was first published in the National Vulnerability Database on June 2, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-27661 actively exploited?
CVE-2020-27661 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 23.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2020-27661?
CVE-2020-27661 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2020-27661?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-27661, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
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