CVE-2026-62428

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-28. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
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.

When grant-copy operations are processed, the respective grant may or may not already be in use by another operation (a mapping or another copy). For all copy operations the referenced guest frame is looked up. When another operation is already active for the grant (the grant is "pinned"), what is being supplied back to actually carry out permission checks and copy operation may not be consistent: The permission check may be carried out on a page different from the one involved in the copy.

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
2%
KEV
Not listed

Published

July 28, 2026

Last Modified

July 28, 2026

Advisory Details (2)

Auto-updated Jul 28, 2026
No patch confirmed yet.
generic

XSA-500 - Xen Security Advisories

http://xenbits.xen.org/xsa/advisory-500.html
generic

XSA-500 - Xen Security Advisories

https://xenbits.xenproject.org/xsa/advisory-500.html

Vendor Advisories for CVE-2026-62428(1)

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

Affected Packages

(8 across 8 ecosystems)
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
xen—4.19.6-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
xen—4.20.4-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
xen—4.20.4-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
xen—4.21.2-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
xen4.14.2+25-gb6a8c4f72d-2 ... 4.20.3+127-gc42374a105-1 (46 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
xen4.17.1+2-gb773c48e36-1 ... 4.20.3+127-gc42374a105-1 (25 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
xen4.20.0+68-g35cb38b222-1 ... 4.20.2+7-g1badcf5035-2 (6 versions)4.20.3+127-gc42374a105-0+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
xen4.20.0+68-g35cb38b222-1, 4.20.2+37-g61ff35323e-1, 4.20.2+7-g1badcf5035-1, 4.20.2+7-g1badcf5035-24.20.3+127-gc42374a105-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 83× 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 177 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-62428?
CVE-2026-62428 is a high vulnerability published on July 28, 2026. When grant-copy operations are processed, the respective grant may or may not already be in use by another operation (a mapping or another copy). For all copy operations the referenced guest frame is looked up. When another operation is already active for the grant (the grant is "pinned"), what is…
When was CVE-2026-62428 disclosed?
CVE-2026-62428 was first published in the National Vulnerability Database on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-62428 actively exploited?
CVE-2026-62428 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 98.2% of all scored CVEs.
What is the CVSS score of CVE-2026-62428?
CVE-2026-62428 has a CVSS v3.1 base score of 7.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-62428?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-62428, 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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