Critical severity · published Oct 22, 2026
CVE-2026-115377
Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 Arbitrary File Write via Symlink in Migration Stream
New
9.9
CVSS
0.4%
EPSS
No
On KEV
Description
Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 contains an arbitrary file write vulnerability that allows malicious migration sources to write host files by planting symlinks in transferred volumes. Attackers can craft rsync or btrfs receive streams with a symlink such as rootfs pointing to the host root, writing files as root for full host compromise.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IN
incus · lxc
before 6.0.7; 6.1.0 before 7.0.2; 7.1.0 before 7.5.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-115377
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-115377
github.com
https://github.com/lxc/incus/security/advisories/GHSA-579w-c4rw-c8q3
www.vulncheck.com
https://www.vulncheck.com/advisories/incus-before-6.0.7-6.1.0-before-7.0.2-and-7.1.0-before-7.5.0-arbitrary-file-write-via-symlink-in-migration-stream
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