CVE-2025-27462

CRITICALPre-NVD 9.49.4
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 95% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
9.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.4Exploit: None knownExposed: 0

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

[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.]

The Windows PV drivers expose various facilities to userspace. Several of these have no security descriptor, and are therefore fully accessible to unprivileged users. These are:

  • XenCons, CVE-2025-27462
  • XenIface, CVE-2025-27463
  • XenBus, CVE-2025-27464

CVSS v3
9.4
EG Score
9.4(medium)
EG Risk
42(Track)
EG Risk 42/100SSVC: 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
Severity94% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

July 9, 2026

Last Modified

July 9, 2026

Advisory Details (1)

Auto-updated Aug 23, 2026
No patch confirmed yet.
generic

XSA-468 - Xen Security Advisories

https://xenbits.xen.org/xsa/advisory-468.html

Vendor Advisories for CVE-2025-27462(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 46× in last 7d / 225× 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 314 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2025-27462?
CVE-2025-27462 is a critical vulnerability published on July 9, 2026. [This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] The Windows PV drivers expose various facilities to userspace. Several of these have no security descriptor, and are therefore fully accessible to unprivileged users.…
When was CVE-2025-27462 disclosed?
CVE-2025-27462 was first published in the National Vulnerability Database on July 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-27462 actively exploited?
CVE-2025-27462 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 94.8% of all scored CVEs.
What is the CVSS score of CVE-2025-27462?
CVE-2025-27462 has a CVSS v3 base score of 9.4 (NVD).
How do I remediate CVE-2025-27462?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-27462, 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

Explore the affected products and dependency analysis for CVE-2025-27462

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