9.9

CVE-2026-48769: lxc incus Improper Input Validation

CVSS: 9.9v3.1CriticalDeferred
AliasesUBUNTU-CVE-2026-48769DEBIAN-CVE-2026-48769GHSA-f6m5-xw2g-xc4x
Published 21-08-2026Last modified 21-08-2026
Open JSON

Vulnerability summary

CVE-2026-48769 is a critical (CVSS 9.9) Improper Input Validation vulnerability in lxc incus. EPSS estimates a 0.73% chance of exploitation in the next 30 days, higher than 53.7% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.9/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.73%
0%100%
Low · +0.19 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2026:11651-1OPENSUSE-SU-2026:21483-1

Timeline

  1. 21-08-2026
    PublishedVulnerability first disclosed.
  2. 21-08-2026
    Last modifiedVulnerability information updated.

Description

Incus is a system container and virtual machine manager. Prior to version 7.2.0, an arbitrary file write exists in the Incus client when a malicious image server returns a crafted `Incus-Image-Hash` header. This can lead to arbitrary command execution as root on the server. Version 7.2.0 patches the issue.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.73%

Chance of exploitation in the next 30 days

Percentile

54%

Versus all other CVEs

30-day change

+0.19 pp

From 0.54% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.73%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian2 products
  • incus< 6.0.4-2+deb13u8 | < 7.0.0-5
  • lxdAll versions (No fix recorded) | < 5.0.2+git20231211.1364ae4-9+deb13u7
Github.com/lxc/incus2 products
  • v6All versions (No fix recorded)
  • v7< 7.2.0
Ubuntu2 products
  • incusAll versions (No fix recorded)
  • lxdAll versions (No fix recorded)
Github.com/lxc1 product
  • incusAll versions (No fix recorded)
Github.com/lxc/incus/v7/cmd1 product
  • incusd< 7.2.0
Lxc1 product

6 vendors · 9 products

References

7 links