CVE-2026-53200

HIGHPre-NVD 8.88.8
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-25. the CNA's CVSS baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

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

In the Linux kernel, the following vulnerability has been resolved:

KVM: arm64: nv: Fix handling of XN[0] when !FEAT_XNX

XN has already been extracted from its bitfield position so using FIELD_PREP() on the mask that clears XN[0] is completely broken, having the effect of unconditionally granting execute permissions...

Fix the obvious mistake by manipulating the right bit.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

June 25, 2026

Last Modified

August 5, 2026

Advisory Details (2)

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

KVM: arm64: nv: Fix handling of XN[0] when !FEAT_XNX - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b95976c2ea446044553a5f469c0bae13553d75ab
generic

KVM: arm64: nv: Fix handling of XN[0] when !FEAT_XNX - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/49b32ddb87a3a109afecea89e55d70f73956b8bc

Vendor Advisories for CVE-2026-53200(1)

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

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (145 versions)7.0.13-1

Data Freshness Timeline

(refreshed 4× in last 7d / 58× 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 201 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-53200?
CVE-2026-53200 is a high vulnerability published on June 25, 2026. In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Fix handling of XN[0] when !FEAT_XNX XN has already been extracted from its bitfield position so using FIELD_PREP() on the mask that clears XN[0] is completely broken, having the effect of unconditionally granting…
When was CVE-2026-53200 disclosed?
CVE-2026-53200 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53200 actively exploited?
CVE-2026-53200 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 94.0% of all scored CVEs.
What is the CVSS score of CVE-2026-53200?
CVE-2026-53200 has a CVSS v4.0 base score of 8.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-53200?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53200, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-53200

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