Vulnerability in Red Hat Enterprise Linux 10
CVE-2026-63622
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (7.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 7.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.001
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-63622 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- access.redhat.com/errata/RHSA-2026:64773 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:65515 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:65516 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:65803 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:68513 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:68594 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:69114 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:69131 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-63622?
- CVE-2026-63622 is a high-severity vulnerability in Red Hat Enterprise Linux 10, classified under Improper Link Resolution Before File Access. CVSS score: 7.8/10. Published 2026-08-10.
- How severe is CVE-2026-63622?
- High severity. CVSS v3 base score is 7.8 out of 10.