# CVE-2026-7867: Udisks2: udisks2: local privilege escalation via as-user option spoofing

Status: published. Published: 2026-08-06. Updated: 2026-11-04.

A flaw was found in udisks2. A local attacker with an active console session can exploit insufficient authorization checking on the 'as-user' option in the org.freedesktop.UDisks2.Filesystem.Mount() D-Bus method. This allows the attacker to spoof the 'as-user' parameter, mounting filesystems on behalf of arbitrary users, including privileged accounts. This can lead to local privilege escalation through mount point injection and manipulation of the mount namespace visible to privileged users.

## Remediation

No remediation reported in collected sources

## Affected products and versions

-  /  (udisks): ≥ 2.10.0; < 2.11.2 (affected, semver). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 10 (udisks2): ≥ 0:2.11.0-2.el10_2.1; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 10.0 Extended Update Support (udisks2): ≥ 0:2.10.90-5.el10_0.3; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (udisks2): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (udisks2): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (udisks2): Version range not reported. Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 7.8 (high); CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H; source: CNA: redhat

- CISA KEV: No listing in collected sources

- EPSS: 0.17% as of 2026-11-04; percentile 6.23%

- SSVC: exploitation none; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-863

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://access.redhat.com/errata/RHSA-2026:53435 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:64798 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/security/cve/CVE-2026-7867 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2466747 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- https://github.com/storaged-project/udisks/releases/tag/udisks-2.11.2 (CNA: redhat)

- https://github.com/storaged-project/udisks/security/advisories/GHSA-j42g-v9jw-6ph3 (CNA: redhat)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2026-7867; retrieved 2026-11-05; source updated 2026-11-04

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-7867; retrieved 2026-11-05; source updated Not reported

Revision: 33f8b704be7d876895c1f96fe1022b05a3f791c981a048f07fc9cba2bb3b4248

Canonical: https://y2.dev/cve/CVE-2026-7867

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