CVE-2026-48750: Incus has an arbitrary file write on host via `exec-output` symlink in crafted image
lxc · incus
No fix listed · Affected: lxc incus · Exploitation: not established
ExploitationNot established
Not in CISA KEV as of catalogue 2026.11.13 (13 Nov)
- In CISA KEV: not seen
- Exploited (reported): not seen
- Scanning observed: not seen
- Proof of concept public: not seen
- Not establishedNothing in the sources we check
Higher than 56% of scored CVEs
DescriptionNVD
Incus is a system container and virtual machine manager. Prior to version 7.2.0, the `record-output` parameter of the `/instances/$name/exec` endpoint stores the output of the command in the `exec-output` directory of the instance. If `exec-output` is a symlink, file named `exec_UUID.stdout` and `exec_UUID.stderr` can be written to an arbitrary location where the `.stdout` file will contain arbitrary content. This behavior can be abused for arbitrary command execution. Version 7.2.0 contains a patch.
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- lxc
- Published
- August 2026
Coverage1 article · 1 outlet
First in our coverage: SecurityOnline, 1 Jul.
- Critical Incus Bug Lets Attackers Write Root Files via ImagesSecurityOnline · first in our coverage · mentions it in passing
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