CVE-2020-10701Network attack vector

Authenticated guest agent disruption via unchecked timeout change

Published May 27, 2021 · Updated Aug 4, 2024

Missing authorization in Red Hat libvirt 5.10.0 through 6.1.0 allows remote authenticated users to interrupt QEMU guest agent commands. virDomainAgentSetResponseTimeout accepts read-only connections and applies an attacker-supplied timeout globally, including zero. A read-only libvirt connection is sufficient, and the resulting timeout causes guest agent operations to fail.

CVSS severity6.5
Medium
EPSS probability0.86%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Red Hat libvirt 5.10.0 through 6.1.0 allows remote authenticated users to interrupt QEMU guest agent commands. virDomainAgentSetResponseTimeout accepts read-only connections and applies an attacker-supplied timeout globally, including zero. A read-only libvirt connection is sufficient, and the resulting timeout causes guest agent operations to fail.

The record

CVE
CVE-2020-10701
Published
May 27, 2021
Updated
Aug 4, 2024
Vendor
Red Hat
Product
libvirt
Classifications
CWE-862, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=libvirt 6.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Red Hat · libvirtversion=libvirt 6.2.0

Published CVSS scores

6.5OSVCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.0SUSEAV:N/AC:L/Au:S/C:N/I:N/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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