CVE-2026-63622

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-10. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

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

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 v3
7.8
EG Score
7.8(high)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 14, 2026

Advisory Details (2)

Auto-updated Aug 10, 2026
Patch available. Sources: redhat.
redhat

2513065 – (CVE-2026-63622) CVE-2026-63622 libvirt: swtpm privilege escalation via symlink following

https://bugzilla.redhat.com/show_bug.cgi?id=2513065
redhat Patch Available

CVE-2026-63622 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-63622

Vendor Advisories for CVE-2026-63622(1)

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

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 28× in last 7d / 46× 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. 2026-08-21 01:39 UTCEG score recompute
  2. 2026-08-21 01:39 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 14:16 UTCGHSA enrichment
  5. 2026-08-20 01:47 UTCEG score recompute
  6. 2026-08-20 01:47 UTCGHSA enrichment
  7. 2026-08-19 17:04 UTCEPSS rescore
  8. 2026-08-19 14:23 UTCGHSA enrichment
  9. 2026-08-19 02:57 UTCGHSA enrichment
  10. 2026-08-18 15:17 UTCEG score recompute
  11. 2026-08-18 15:17 UTCGHSA enrichment
  12. 2026-08-18 13:48 UTCEPSS rescore
  13. 2026-08-18 03:03 UTCGHSA enrichment
  14. 2026-08-17 15:41 UTCEG score recompute
  15. 2026-08-17 15:41 UTCGHSA enrichment
  16. 2026-08-17 13:47 UTCEPSS rescore
  17. 2026-08-17 04:19 UTCGHSA enrichment
  18. 2026-08-16 16:57 UTCEG score recompute
  19. 2026-08-16 16:57 UTCGHSA enrichment
  20. 2026-08-16 14:56 UTCEPSS rescore
  21. 2026-08-16 05:34 UTCEG score recompute
  22. 2026-08-16 05:34 UTCGHSA enrichment
  23. 2026-08-15 18:13 UTCGHSA enrichment
  24. 2026-08-15 06:51 UTCEG score recompute
  25. 2026-08-15 06:51 UTCGHSA enrichment
Show 21 more
  1. 2026-08-15 01:30 UTCEPSS rescore
  2. 2026-08-14 19:19 UTCGHSA enrichment
  3. 2026-08-14 14:53 UTCGHSA enrichment
  4. 2026-08-14 03:30 UTCEG score recompute
  5. 2026-08-14 03:30 UTCGHSA enrichment
  6. 2026-08-13 22:00 UTCEPSS rescore
  7. 2026-08-13 16:08 UTCGHSA enrichment
  8. 2026-08-13 04:46 UTCGHSA enrichment
  9. 2026-08-12 17:24 UTCEG score recompute
  10. 2026-08-12 17:24 UTCGHSA enrichment
  11. 2026-08-12 13:51 UTCEPSS rescore
  12. 2026-08-12 06:02 UTCGHSA enrichment
  13. 2026-08-11 18:40 UTCEG score recompute
  14. 2026-08-11 18:39 UTCGHSA enrichment
  15. 2026-08-11 17:45 UTCEG score recompute
  16. 2026-08-11 17:45 UTCGHSA enrichment
  17. 2026-08-11 08:53 UTCEG score recompute
  18. 2026-08-11 08:53 UTCGHSA enrichment
  19. 2026-08-10 21:31 UTCEG score recompute
  20. 2026-08-10 20:55 UTCEG score recompute
  21. 2026-08-10 20:54 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-63622?
CVE-2026-63622 is a high vulnerability published on August 10, 2026. 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…
When was CVE-2026-63622 disclosed?
CVE-2026-63622 was first published in the National Vulnerability Database on August 10, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63622 actively exploited?
CVE-2026-63622 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 96.9% of all scored CVEs.
What is the CVSS score of CVE-2026-63622?
CVE-2026-63622 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-63622?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63622, 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.

Dependency Blast Radius

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