CVE-2026-63622

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM 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 — Patch released 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

A fix is available — apply it.

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(medium)
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

September 17, 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(4)

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

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatvirt:rhel-8080020260910092120.63b345852026-09-17redhat
redhatvirt:rhel-8060020260910092451.ad008a3a2026-09-17redhat
redhatlibvirt-0:10.0.0-6.23.el9_42026-09-09redhat
redhatlibvirt-0:9.0.0-10.16.el9_22026-09-08redhat
redhatlibvirt-0:10.10.0-7.18.el9_62026-09-08redhat
redhatlibvirt-0:10.10.0-8.11.el10_02026-09-08redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libvirt10.0.0-1 ... 9.9.0-1 (70 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libvirt11.10.0-1 ... 12.6.0-1 (20 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libvirt11.10.0-1 ... 12.5.0-1 (17 versions)12.6.0-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(3)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 46× in last 7d / 147× 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.

Showing the most recent 100 of 194 total refreshes for this CVE.

  1. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-20 11:12 UTCVendor advisory
  3. 2026-09-20 11:12 UTCGHSA enrichment
  4. 2026-09-19 23:50 UTCEG score recompute
  5. 2026-09-19 23:50 UTCVendor advisory
  6. 2026-09-19 23:50 UTCGHSA enrichment
  7. 2026-09-19 12:28 UTCVendor advisory
  8. 2026-09-19 12:28 UTCGHSA enrichment
  9. 2026-09-19 00:33 UTCEG score recompute
  10. 2026-09-19 00:33 UTCVendor advisory
  11. 2026-09-19 00:33 UTCGHSA enrichment
  12. 2026-09-18 19:28 UTCEPSS rescore
  13. 2026-09-18 13:09 UTCVendor advisory
  14. 2026-09-18 13:09 UTCGHSA enrichment
  15. 2026-09-18 00:53 UTCEG score recompute
  16. 2026-09-18 00:53 UTCVendor advisory
  17. 2026-09-18 00:53 UTCGHSA enrichment
  18. 2026-09-17 13:29 UTCEG score recompute
  19. 2026-09-17 13:29 UTCVendor advisory
  20. 2026-09-17 13:29 UTCGHSA enrichment
  21. 2026-09-17 12:53 UTCEG score recompute
  22. 2026-09-17 12:53 UTCVendor advisory
  23. 2026-09-17 12:53 UTCGHSA enrichment
  24. 2026-09-17 08:29 UTCEG score recompute
  25. 2026-09-17 08:29 UTCVendor advisory
Show 75 more
  1. 2026-09-17 08:29 UTCGHSA enrichment
  2. 2026-09-17 07:34 UTCEG score recompute
  3. 2026-09-17 07:34 UTCVendor advisory
  4. 2026-09-17 07:34 UTCGHSA enrichment
  5. 2026-09-17 00:40 UTCEG score recompute
  6. 2026-09-17 00:40 UTCVendor advisory
  7. 2026-09-17 00:40 UTCGHSA enrichment
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-16 02:23 UTCVendor advisory
  11. 2026-09-16 02:23 UTCGHSA enrichment
  12. 2026-09-15 13:41 UTCEG score recompute
  13. 2026-09-15 13:41 UTCVendor advisory
  14. 2026-09-15 13:41 UTCGHSA enrichment
  15. 2026-09-15 00:27 UTCVendor advisory
  16. 2026-09-15 00:27 UTCGHSA enrichment
  17. 2026-09-14 12:58 UTCVendor advisory
  18. 2026-09-14 12:58 UTCGHSA enrichment
  19. 2026-09-14 01:20 UTCEG score recompute
  20. 2026-09-14 01:20 UTCVendor advisory
  21. 2026-09-14 01:20 UTCGHSA enrichment
  22. 2026-09-13 13:58 UTCVendor advisory
  23. 2026-09-13 13:58 UTCGHSA enrichment
  24. 2026-09-13 02:35 UTCVendor advisory
  25. 2026-09-13 02:35 UTCGHSA enrichment
  26. 2026-09-12 15:13 UTCEG score recompute
  27. 2026-09-12 15:13 UTCVendor advisory
  28. 2026-09-12 15:13 UTCGHSA enrichment
  29. 2026-09-12 03:51 UTCVendor advisory
  30. 2026-09-12 03:51 UTCGHSA enrichment
  31. 2026-09-11 16:29 UTCEG score recompute
  32. 2026-09-11 16:29 UTCVendor advisory
  33. 2026-09-11 16:29 UTCGHSA enrichment
  34. 2026-09-11 09:37 UTCEPSS rescore
  35. 2026-09-11 05:07 UTCVendor advisory
  36. 2026-09-11 05:06 UTCGHSA enrichment
  37. 2026-09-10 17:43 UTCEG score recompute
  38. 2026-09-10 17:43 UTCVendor advisory
  39. 2026-09-10 17:43 UTCGHSA enrichment
  40. 2026-09-10 06:21 UTCEG score recompute
  41. 2026-09-10 06:21 UTCVendor advisory
  42. 2026-09-10 06:21 UTCGHSA enrichment
  43. 2026-09-09 18:42 UTCVendor advisory
  44. 2026-09-09 18:42 UTCGHSA enrichment
  45. 2026-09-09 07:20 UTCEG score recompute
  46. 2026-09-09 07:20 UTCVendor advisory
  47. 2026-09-09 07:20 UTCGHSA enrichment
  48. 2026-09-09 06:38 UTCEG score recompute
  49. 2026-09-09 06:38 UTCVendor advisory
  50. 2026-09-09 06:38 UTCGHSA enrichment
  51. 2026-09-08 22:01 UTCEPSS rescore
  52. 2026-09-08 21:00 UTCEG score recompute
  53. 2026-09-08 21:00 UTCGHSA enrichment
  54. 2026-09-08 20:10 UTCEG score recompute
  55. 2026-09-08 20:10 UTCGHSA enrichment
  56. 2026-09-08 08:35 UTCEG score recompute
  57. 2026-09-08 08:35 UTCGHSA enrichment
  58. 2026-09-08 08:03 UTCEG score recompute
  59. 2026-09-08 08:03 UTCGHSA enrichment
  60. 2026-09-08 04:34 UTCGHSA enrichment
  61. 2026-09-07 17:11 UTCEG score recompute
  62. 2026-09-07 17:11 UTCGHSA enrichment
  63. 2026-09-07 16:01 UTCEPSS rescore
  64. 2026-09-06 14:09 UTCEG score recompute
  65. 2026-09-06 14:09 UTCGHSA enrichment
  66. 2026-09-06 13:47 UTCEPSS rescore
  67. 2026-09-06 02:47 UTCEG score recompute
  68. 2026-09-06 02:47 UTCGHSA enrichment
  69. 2026-09-05 15:31 UTCEPSS rescore
  70. 2026-09-05 15:25 UTCGHSA enrichment
  71. 2026-09-05 03:19 UTCGHSA enrichment
  72. 2026-09-04 15:52 UTCEG score recompute
  73. 2026-09-04 15:52 UTCGHSA enrichment
  74. 2026-09-04 05:07 UTCEPSS rescore
  75. 2026-09-04 04:01 UTCGHSA enrichment

Related CVEs(same vendor + same CWE)

Same vendor

1 shown

redhat:RHSA-2026:68513

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 September 17, 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 96.8% 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-63622

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