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: 0.1%CVSS: 7.8Exploit: None knownExposed services: Not assessed

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
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
2nd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 10, 2026

Last Modified

October 5, 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(11)

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

Patch Availability(10)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulibvirt0-hwe (12.0.0-1ubuntu5.5) @ resolute2026-10-05ubuntu
redhatlibvirt-0:11.10.0-12.7.el9_82026-10-02redhat
redhatlibvirt-0:4.5.0-36.el7_9.72026-09-21redhat
redhatvirt:rhel-8040020260916092751.522a0ee42026-09-21redhat
redhatvirt:rhel-8060020260910092451.ad008a3a2026-09-17redhat
redhatvirt:rhel-8080020260910092120.63b345852026-09-17redhat
redhatlibvirt-0:10.0.0-6.23.el9_42026-09-09redhat
redhatlibvirt-0:10.10.0-7.18.el9_62026-09-08redhat
redhatlibvirt-0:9.0.0-10.16.el9_22026-09-08redhat
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 rangeFix by version rangeDependents
libvirt10.0.0-1 ... 9.9.0-1 (71 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libvirt11.3.0-3, 11.3.0-3+deb13u1, 11.3.0-3+deb13u2
  • every version up to 11.3.0-3+deb13u3: fixed in 11.3.0-3+deb13u3
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libvirt11.10.0-1 ... 12.5.0-1 (17 versions)
  • every version up to 12.6.0-1: fixed in 12.6.0-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

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 38× in last 7d / 174× 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 273 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + 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 on August 10, 2026, with the most recent update on October 5, 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 0.1% probability of exploitation in the next 30 days (2nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-63622?
CVE-2026-63622 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-63622?
A fix for CVE-2026-63622 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-63622 are linked in the Vendor Advisories panel on this page.

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