CVE-2026-47753Public exploitNetwork attack vector

Authenticated daemon crash via omitted backup volume

Published Aug 21, 2026 · Updated Aug 21, 2026

A nil-pointer dereference in Incus before 7.1.0 allows remote authenticated users to crash incusd via a crafted instance backup. CreateInstanceFromBackup checks Config.Container but not Config.Volume, then reads Config.Volume.Config after an omitted volume field decodes to nil. Instance-creation permission in any project is sufficient; the panic terminates the daemon and interrupts operations for every project on that cluster member.

CVSS severityUnavailable
Unscored
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A nil-pointer dereference in Incus before 7.1.0 allows remote authenticated users to crash incusd via a crafted instance backup. CreateInstanceFromBackup checks Config.Container but not Config.Volume, then reads Config.Volume.Config after an omitted volume field decodes to nil. Instance-creation permission in any project is sufficient; the panic terminates the daemon and interrupts operations for every project on that cluster member.

The record

CVE
CVE-2026-47753
Published
Aug 21, 2026
Updated
Aug 21, 2026
Vendor
Linux Containers
Product
Incus
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 21, 2026Record 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=< 7.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Linux Containers · Incusversion=< 7.1.0

Published CVSS scores

4.4GitHubCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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