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CVE-2026-33743

Incus vulnerable to denial of source through crafted bucket backup file

Published: Mar 26, 2026Updated: Mar 30, 2026 Sources: CVE List NVD BDUCWE-770
6.5MEDIUM
NVD MITRE
EPSS Score
0.4%
Top 69.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Incus is a system container and virtual machine manager. Prior to version 6.23.0, a specially crafted storage bucket backup can be used by an user with access to Incus' storage bucket feature to crash the Incus daemon. Repeated use of this attack can be used to keep the server offline causing a denial of service of the control plane API. This does not impact any running workload, existing containers and virtual machines will keep operating. Version 6.23.0 fixes the issue.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-770

Affected Products

incuslinuxcontainers
Mixed
Cloud & SaaS / container-orchestration
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
IncusСообщество свободного программного обеспеченияOperating Systems / linux-distro
incuslxc
Mixed
Cloud & SaaS / container-orchestration
linuxcontainersoss-projectCloud & SaaSaka incus, lxc
ооо «ред софт»commercialRUOperating Systemsaka red soft
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
lxcoss-projectCloud & SaaSaka lxc container

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/lxc/incus/security/advisories/GHSA-vg76-xmhg-j5x3
github.com
https://github.com/lxc/incus/commit/4bca6332e8227a5f25f74b51a66b7382e9133aaa
github.com
https://github.com/lxc/incus
github.com
and 4 more references View all →

Timeline

Published
Mar 26, 2026
Last Updated
Mar 30, 2026

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