CVE-2025-10263

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-09. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — Patch released this week
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.1Exploit: None knownExposed: 0

A fix is available — apply it.

Arm C1-Ultra, C1-Premium, Neoverse V3 & V3AE, Neoverse V2, Neoverse V1, Neoverse-N2, Neoverse-N1, Cortex-X925, Cortex-X4, Cortex-X3, Cortex-X2, Cortex-X1 & X1C, Cortex-A710, Cortex-A78, A78AE & A78C, Cortex-A77, Cortex-A76 & A76A may allow writes to resources owned by a higher exception level.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
56(Track)
EG Risk 56/100SSVC: 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
Severity91% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
45%
KEV
Not listed

Published

June 9, 2026

Last Modified

August 20, 2026

Advisory Details (10)

Auto-updated Aug 1, 2026
Patch available. Sources: redhat.
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2025-10263
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support

https://access.redhat.com/errata/RHSA-2026:47248
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:40764
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2026:36349
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2026:36348
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:36018
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:34911
generic

XSA-493 - Xen Security Advisories

http://xenbits.xen.org/xsa/advisory-493.html
generic

oss-security - Xen Security Advisory 493 v2 (CVE-2025-10263) - Arm: Completion of memory accesses not guaranteed by completion of a TLBI

http://www.openwall.com/lists/oss-security/2026/06/09/13
generic

Documentation – Arm Developer

https://developer.arm.com/documentation/112137

Vendor Advisories for CVE-2025-10263(20)

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

Patch Availability(17)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrhcos-4.19.9.6.202608120446-02026-08-19redhat
redhatrhcos-418.94.202608111829-02026-08-19redhat
redhatrhcos-4.20.9.6.202608121719-02026-08-18redhat
redhatrhcos-4.21.9.6.202608122143-02026-08-18redhat
redhatkernel-0:6.12.0-55.98.1.el10_02026-08-17redhat
redhatkernel-0:4.18.0-477.158.1.el8_82026-08-10redhat
redhatkernel-0:5.14.0-284.186.1.el9_22026-08-07redhat
redhatkernel-0:5.14.0-427.143.1.el9_42026-08-07redhat
redhatkernel-rt-0:5.14.0-284.186.1.rt14.471.el9_22026-08-07redhat
redhatkernel-0:5.14.0-570.131.1.el9_62026-07-31redhat
redhatkernel-0:4.18.0-372.204.1.el8_62026-07-31redhat
redhatkernel-0:4.18.0-305.200.1.el8_42026-07-28redhat
redhatrhcos-4.22.9.8.202607152026-02026-07-21redhat
redhatkernel-0:4.18.0-553.140.1.el8_102026-07-07redhat
redhatkernel-rt-0:4.18.0-553.140.1.rt7.481.el8_102026-07-07redhat
redhatkernel-0:5.14.0-687.22.1.el9_82026-07-06redhat
redhatkernel-0:6.12.0-211.30.1.el10_22026-07-02redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(14 across 9 ecosystems)
Debian:11(3)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (54 versions)5.10.259-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.174-1~deb11u1 (20 versions)6.1.176-1~deb11u1—
xen4.14.2+25-gb6a8c4f72d-2 ... 4.20.3+127-gc42374a105-1 (46 versions)——
Debian:12(2)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1—
xen4.17.1+2-gb773c48e36-1 ... 4.20.3+127-gc42374a105-1 (25 versions)——
Debian:13(2)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)6.12.94-1—
xen4.20.0+68-g35cb38b222-1 ... 4.20.3+127-gc42374a105-1 (7 versions)——
Debian:14(2)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (143 versions)7.0.13-1—
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—
Alpine:v3.20(1)
PackageVulnerable rangeFixed inDependents
xen—4.18.5-r9—
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
xen—4.19.5-r4—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
xen—4.20.3-r4—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
xen—4.20.3-r4—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
xen—4.21.1-r6—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 65× in last 7d / 273× 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 611 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2025-10263?
CVE-2025-10263 is a critical vulnerability published on June 9, 2026. Arm C1-Ultra, C1-Premium, Neoverse V3 & V3AE, Neoverse V2, Neoverse V1, Neoverse-N2, Neoverse-N1, Cortex-X925, Cortex-X4, Cortex-X3, Cortex-X2, Cortex-X1 & X1C, Cortex-A710, Cortex-A78, A78AE & A78C, Cortex-A77, Cortex-A76 & A76A may allow writes to resources owned by a higher exception level.
When was CVE-2025-10263 disclosed?
CVE-2025-10263 was first published in the National Vulnerability Database on June 9, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-10263 actively exploited?
CVE-2025-10263 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 55.2% of all scored CVEs.
What is the CVSS score of CVE-2025-10263?
CVE-2025-10263 has a CVSS v3.1 base score of 9.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2025-10263?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-10263, 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-2025-10263

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