CVE-2025-27464

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: 1. XenCons, CVE-2025-27462 2. XenIface, CVE-2025-27463 3. 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 Jul 9, 2026
No patch confirmed yet.
generic

XSA-468 - Xen Security Advisories

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

Vendor Advisories for CVE-2025-27464(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 16× in last 7d / 82× 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.

  1. 2026-07-27 03:37 UTCGHSA enrichment
  2. 2026-07-26 23:45 UTCGHSA enrichment
  3. 2026-07-26 20:00 UTCGHSA enrichment
  4. 2026-07-26 16:14 UTCEG score recompute
  5. 2026-07-26 16:14 UTCGHSA enrichment
  6. 2026-07-26 14:53 UTCEPSS rescore
  7. 2026-07-26 12:19 UTCEG score recompute
  8. 2026-07-26 12:19 UTCGHSA enrichment
  9. 2026-07-25 14:17 UTCEPSS rescore
  10. 2026-07-24 14:17 UTCEPSS rescore
  11. 2026-07-23 02:52 UTCEG score recompute
  12. 2026-07-22 14:07 UTCEPSS rescore
  13. 2026-07-22 14:07 UTCEPSS rescore
  14. 2026-07-21 15:24 UTCEPSS rescore
  15. 2026-07-21 15:24 UTCEPSS rescore
  16. 2026-07-20 17:07 UTCEPSS rescore
  17. 2026-07-19 14:30 UTCEPSS rescore
  18. 2026-07-19 14:30 UTCEPSS rescore
  19. 2026-07-18 10:04 UTCEPSS rescore
  20. 2026-07-18 10:04 UTCEPSS rescore
  21. 2026-07-17 03:26 UTCGHSA enrichment
  22. 2026-07-16 23:39 UTCGHSA enrichment
  23. 2026-07-16 19:54 UTCGHSA enrichment
  24. 2026-07-16 17:02 UTCEPSS rescore
  25. 2026-07-16 16:09 UTCGHSA enrichment
Show 57 more
  1. 2026-07-16 12:24 UTCGHSA enrichment
  2. 2026-07-16 08:39 UTCGHSA enrichment
  3. 2026-07-16 04:55 UTCGHSA enrichment
  4. 2026-07-16 01:11 UTCGHSA enrichment
  5. 2026-07-15 21:26 UTCGHSA enrichment
  6. 2026-07-15 17:41 UTCGHSA enrichment
  7. 2026-07-15 16:57 UTCEPSS rescore
  8. 2026-07-15 16:57 UTCEPSS rescore
  9. 2026-07-15 13:57 UTCGHSA enrichment
  10. 2026-07-15 10:11 UTCGHSA enrichment
  11. 2026-07-15 06:26 UTCGHSA enrichment
  12. 2026-07-15 02:42 UTCGHSA enrichment
  13. 2026-07-15 01:59 UTCEPSS rescore
  14. 2026-07-15 01:59 UTCEPSS rescore
  15. 2026-07-14 22:52 UTCGHSA enrichment
  16. 2026-07-14 19:07 UTCGHSA enrichment
  17. 2026-07-14 15:22 UTCGHSA enrichment
  18. 2026-07-14 11:38 UTCGHSA enrichment
  19. 2026-07-14 07:52 UTCGHSA enrichment
  20. 2026-07-14 04:05 UTCGHSA enrichment
  21. 2026-07-14 00:21 UTCGHSA enrichment
  22. 2026-07-13 22:29 UTCEPSS rescore
  23. 2026-07-13 20:37 UTCGHSA enrichment
  24. 2026-07-13 16:53 UTCGHSA enrichment
  25. 2026-07-13 13:09 UTCGHSA enrichment
  26. 2026-07-13 09:25 UTCGHSA enrichment
  27. 2026-07-13 06:12 UTCEPSS rescore
  28. 2026-07-13 06:12 UTCEPSS rescore
  29. 2026-07-13 05:41 UTCGHSA enrichment
  30. 2026-07-13 01:57 UTCGHSA enrichment
  31. 2026-07-12 22:12 UTCGHSA enrichment
  32. 2026-07-12 18:28 UTCGHSA enrichment
  33. 2026-07-12 14:44 UTCGHSA enrichment
  34. 2026-07-12 10:59 UTCGHSA enrichment
  35. 2026-07-12 07:15 UTCGHSA enrichment
  36. 2026-07-12 05:46 UTCEPSS rescore
  37. 2026-07-12 05:46 UTCEPSS rescore
  38. 2026-07-12 03:30 UTCGHSA enrichment
  39. 2026-07-11 23:46 UTCGHSA enrichment
  40. 2026-07-11 20:01 UTCGHSA enrichment
  41. 2026-07-11 16:17 UTCGHSA enrichment
  42. 2026-07-11 12:33 UTCGHSA enrichment
  43. 2026-07-11 08:49 UTCGHSA enrichment
  44. 2026-07-11 08:27 UTCEPSS rescore
  45. 2026-07-11 08:27 UTCEPSS rescore
  46. 2026-07-11 05:05 UTCGHSA enrichment
  47. 2026-07-11 01:20 UTCGHSA enrichment
  48. 2026-07-10 21:36 UTCGHSA enrichment
  49. 2026-07-10 17:52 UTCGHSA enrichment
  50. 2026-07-10 14:08 UTCGHSA enrichment
  51. 2026-07-10 10:21 UTCGHSA enrichment
  52. 2026-07-10 06:36 UTCGHSA enrichment
  53. 2026-07-10 02:50 UTCGHSA enrichment
  54. 2026-07-09 23:05 UTCGHSA enrichment
  55. 2026-07-09 19:21 UTCGHSA enrichment
  56. 2026-07-09 15:37 UTCEG score recompute
  57. 2026-07-09 15:35 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-27464?
CVE-2025-27464 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-2025-27464 disclosed?
CVE-2025-27464 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-2025-27464 actively exploited?
CVE-2025-27464 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 94.6% of all scored CVEs.
What is the CVSS score of CVE-2025-27464?
CVE-2025-27464 has a CVSS v3 base score of 9.4 (NVD).
How do I remediate CVE-2025-27464?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-27464, 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-2025-27464

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