CVE-2026-62432

HIGHPre-NVD 7.37.3—
EchelonGraph scoreMEDIUM confidence

Score 7.3 from GitHub Security Advisory (severity: HIGH) published 2026-07-28. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
7.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.3Exploit: None knownExposed: 0

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

The EVTCHNOP_expand_array hypercall checks for whether FIFO event channels are enabled, but without holding the correct lock. It can race with EVTCHNOP_reset, resulting in dereferencing a NULL pointer.

CVSS v3
7.3
EG Score
7.3(medium)
EG Risk
48(Track)
EG Risk 48/100SSVC: 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
Severity73% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
16%
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-505 - Xen Security Advisories

http://xenbits.xen.org/xsa/advisory-505.html
generic

XSA-505 - Xen Security Advisories

https://xenbits.xenproject.org/xsa/advisory-505.html

Vendor Advisories for CVE-2026-62432(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 19× in last 7d / 91× 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 178 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-62432?
CVE-2026-62432 is a high vulnerability published on July 28, 2026. The EVTCHNOPexpandarray hypercall checks for whether FIFO event channels are enabled, but without holding the correct lock. It can race with EVTCHNOP_reset, resulting in dereferencing a NULL pointer.
When was CVE-2026-62432 disclosed?
CVE-2026-62432 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-2026-62432 actively exploited?
CVE-2026-62432 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 84.3% of all scored CVEs.
What is the CVSS score of CVE-2026-62432?
CVE-2026-62432 has a CVSS v3.1 base score of 7.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-62432?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-62432, 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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