CVE-2026-56129

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreHIGH confidence

Score 5.5 from GitHub Security Advisory published 2026-06-25. a secondary CVSS source baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 0

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

Generic IO & Memory Access driver for PCs provided by TOSHIBA CORPORATION and Dynabook Inc. exposes its IOCTL with insufficient access control. A logged-in user with no administrative privilege may access physical memory.

CVSS v3
5.5
EG Score
5.5(high)
EPSS
2.3%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 25, 2026

Advisory Details (3)

Auto-updated Jun 26, 2026
No patch confirmed yet.
generic

JVNVU#91051826: Generic IO & Memory Access driver for TOSHIBA and Dynabook PCs exposes its IOCTL with insufficient access control

https://jvn.jp/en/vu/JVNVU91051826/
generic

Product Security Advisory

https://global.sharp/corporate/info/product-security/advisory-list/2026-003/
generic

製品セキュリティアドバイザリ｜製品セキュリティ：シャープ株式会社

https://corporate.jp.sharp/info/product-security/advisory-list/2026-003/

Vendor Advisories for CVE-2026-56129(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 20× in last 7d / 37× 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. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 11:34 UTCEG score recompute
  4. 2026-07-06 11:34 UTCGHSA enrichment
  5. 2026-07-05 11:31 UTCEG score recompute
  6. 2026-07-05 11:31 UTCGHSA enrichment
  7. 2026-07-05 02:31 UTCEPSS rescore
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-04 11:27 UTCEG score recompute
  10. 2026-07-04 11:27 UTCGHSA enrichment
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-04 06:31 UTCEPSS rescore
  13. 2026-07-03 11:25 UTCEG score recompute
  14. 2026-07-03 11:25 UTCGHSA enrichment
  15. 2026-07-02 11:13 UTCEG score recompute
  16. 2026-07-02 11:13 UTCGHSA enrichment
  17. 2026-07-01 11:11 UTCEG score recompute
  18. 2026-07-01 11:11 UTCGHSA enrichment
  19. 2026-06-30 11:08 UTCEG score recompute
  20. 2026-06-30 11:08 UTCGHSA enrichment
  21. 2026-06-29 14:06 UTCEPSS rescore
  22. 2026-06-29 14:06 UTCEPSS rescore
  23. 2026-06-29 11:06 UTCEG score recompute
  24. 2026-06-29 11:05 UTCGHSA enrichment
  25. 2026-06-28 11:03 UTCEG score recompute
Show 12 more
  1. 2026-06-28 11:03 UTCGHSA enrichment
  2. 2026-06-28 04:56 UTCEPSS rescore
  3. 2026-06-28 04:56 UTCEPSS rescore
  4. 2026-06-27 11:00 UTCEG score recompute
  5. 2026-06-27 11:00 UTCGHSA enrichment
  6. 2026-06-27 03:08 UTCEPSS rescore
  7. 2026-06-26 10:58 UTCEG score recompute
  8. 2026-06-26 10:58 UTCGHSA enrichment
  9. 2026-06-26 09:42 UTCNVD updateCVSS v4 → 6.8
  10. 2026-06-25 13:49 UTCEPSS rescore
  11. 2026-06-25 10:10 UTCEG score recompute
  12. 2026-06-25 10:10 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-56129?
CVE-2026-56129 is a medium vulnerability published on June 25, 2026. Generic IO & Memory Access driver for PCs provided by TOSHIBA CORPORATION and Dynabook Inc. exposes its IOCTL with insufficient access control. A logged-in user with no administrative privilege may access physical memory.
When was CVE-2026-56129 disclosed?
CVE-2026-56129 was first published in the National Vulnerability Database on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56129 actively exploited?
CVE-2026-56129 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-56129?
CVE-2026-56129 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-56129?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56129, 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-2026-56129

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