CVE-2026-63622Libvirt: swtpm privilege escalation via symlink following
Updated under an hour ago ()
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It affects Red Hat Enterprise Linux 10 and 8 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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A flaw was found in libvirt. A local attacker, specifically a process running as the confined `swtpm` user, could exploit a symlink-following vulnerability in the `virFileChownFiles()` function. By planting a symbolic link within the `swtpm` state directory, the attacker could trick the root-level libvirt daemon into changing the ownership of an arbitrary file to the `swtpm` user. This allows for privilege escalation from the `swtpm` sandbox to root-level file ownership control.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-59
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 5, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 0:11.10.0-12.9.el10_2 not affected | CNA record |
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support redhat:enterprise_linux_eus | from 0:10.10.0-8.11.el10_0 not affected | CNA record |
from 0:4.5.0-36.el7_9.7 not affected | CNA record | |
from 8040020260916092751.522a0ee4 not affected | CNA record | |
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support redhat:rhel_eus_long_life | from 8040020260916092751.522a0ee4 not affected | CNA record |
from 8080020260910092120.63b34585 not affected | CNA record | |
from 8080020260910092120.63b34585 not affected | CNA record | |
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support redhat:rhel_eus | from 0:10.10.0-7.18.el9_6 not affected | CNA record |
Red Hat Red Hat Enterprise Linux for NVIDIA 26 redhat:enterprise_linux_nvidia | Versions not stated | CNA record |
References
- https://access.redhat.com/errata/RHSA-2026:64773vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:65515vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:65516vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:65803vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:68513vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:68594vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:69114vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:69131vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:74424vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:75583vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2026-63622vdb-entry, x-refsource-redhat
- https://bugzilla.redhat.com/show_bug.cgi?id=2513065issue-tracking, x-refsource-redhat
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.