Vulnerability · CVE-2026-48756
Incus is a system container and virtual machine manager.
Published Aug 21, 2026 · corrected/updated Oct 15, 2026 · evidence confidence high
Incus is a system container and virtual machine manager. Prior to version 7.1.0, in contains an unguarded dereference on the field of every volume-snapshot entry in an imported custom-volume backup. An authenticated user with permission on any project can crash the daemon by uploading a backup tarball whose field is absent. This is a sibling-field variant of GHSA-r7w7-mmxr-47r9 (CVE-2026-40197). Commit added at the top of the loop body, but did not guard the adjacent deref 19 lines later. Every other consumer of in this same file already gates the deref with a nil-check — the asymmetric guard is the bug. Version 7.1.0 contains an updated patch.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2026-48756 is a low public vulnerability record for this product. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether this product is in your estate, then compare installed versions with the affected ranges. Affected version ranges have not been ingested yet. Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 2.1, EPSS 0.4%. It is not currently listed in the CISA Known Exploited catalog. Weakness classes: CWE-476. Sources contributing to this record: cve_org, epss, nvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.
Patch and remediation
No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Aug 21, 2026 · NIST NVD
Detected
Incus is a system container and virtual machine manager. Prior to version 7.1.0, in contains an unguarded dereference on the field of every volume-snapshot entry in an imported custom-volume backup. An authenticated user with permission on any project can crash the daemon by uploading a backup tarball whose field is absent. This is a sibling-field variant of GHSA-r7w7-mmxr-47r9 (CVE-2026-40197). C
Oct 15, 2026 · NIST NVD
Updated
Incus is a system container and virtual machine manager. Prior to version 7.1.0, in contains an unguarded dereference on the field of every volume-snapshot entry in an imported custom-volume backup. An authenticated user with permission on any project can crash the daemon by uploading a backup tarball whose field is absent. This is a sibling-field variant of GHSA-r7w7-mmxr-47r9 (CVE-2026-40197). C
Sources
- CVE.orgVulnerability recordCVE-2026-48756
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-48756
30-day exploitation probability 0.4%
first.org - NIST NVDVulnerability recordCVE-2026-48756
Incus is a system container and virtual machine manager. Prior to version 7.1.0, in contains an unguarded dereference on the field of every volume-snapshot entry in an imported
nvd.nist.gov