qemu/qemu_driver.c in libvirt before 6.0.0 mishandles the holding of a monitor job during a query to a guest agent, which allows attackers to cause a denial of service (API blockage).
CVE-2019-20485
Score 5.7 from GitHub Security Advisory (severity: LOW) published 2022-05-24. NVD baseline CVSS 5.7; sources differ by 0.0.
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 5.7
- EG Score
- 5.7(medium)
- EG Risk
- 30(Track)EG Risk 30/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity57% × 45%Exploitation1% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS
- 53.2%
- KEV
- Not listed
Published
March 19, 2020
Last Modified
November 21, 2024
References (12)
- cve@mitrehttps://bugs.debian.org/cgi-bin/bugreport.cgi?bug=953078
- cve@mitrehttps://bugzilla.redhat.com/show_bug.cgi?id=1809740
- cve@mitrehttps://libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=a663a860819287e041c3de672aad1d8543098ecc
- cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D5GE6ISYUL3CIWO3FQRUGMKTKP2NYED2/
- cve@mitrehttps://security-tracker.debian.org/tracker/CVE-2019-20485
- cve@mitrehttps://www.mail-archive.com/debian-bugs-dist%40lists.debian.org/msg1730509.html
- af854a3a-2127-422b-91ae-364da2661108https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=953078
- af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1809740
- af854a3a-2127-422b-91ae-364da2661108https://libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=a663a860819287e041c3de672aad1d8543098ecc
- af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D5GE6ISYUL3CIWO3FQRUGMKTKP2NYED2/
- af854a3a-2127-422b-91ae-364da2661108https://security-tracker.debian.org/tracker/CVE-2019-20485
- af854a3a-2127-422b-91ae-364da2661108https://www.mail-archive.com/debian-bugs-dist%40lists.debian.org/msg1730509.html
Vendor Advisories for CVE-2019-20485(3)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2020:4676Red Hat Product SecurityMedium
Red Hat Security Advisory: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update
- RHSA-2020:4000Red Hat Product SecurityMedium
Red Hat Security Advisory: libvirt security and bug fix update
- RHBA-2020:2017Red Hat Product SecurityMedium
Red Hat Bug Fix Advisory: Advanced Virtualization bug fix and enhancement update
Patch Availability(3)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | virt:rhel-8030020200909014558.30b713e6 | 2020-11-04 | redhat |
| redhat | libvirt-0:4.5.0-36.el7 | 2020-09-29 | redhat |
| redhat | virt-devel:8.2-8020020200414225921.6a468ee4 | 2020-05-05 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 15× in last 7d / 47× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-23 01:43 UTCEG score recompute
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- 2026-05-27 06:15 UTCVendor advisory
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Frequently asked(5)
What is CVE-2019-20485?
When was CVE-2019-20485 disclosed?
Is CVE-2019-20485 actively exploited?
What is the CVSS score of CVE-2019-20485?
How do I remediate CVE-2019-20485?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2019-20485
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