How severe is CVE-2026-56129?

CVE-2026-56129 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-56129 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-56129?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-56129 have an EU (EUVD) identifier?

Yes. CVE-2026-56129 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39190.

When was CVE-2026-56129 published?

CVE-2026-56129 was published on 2026-06-25.

CVE-2026-56129

CVE-2026-56129 is a medium-severity vulnerability with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-782.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v4: 6.8
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39190
Weakness: CWE-782
Published: 2026-06-25
Last modified: 2026-06-25

Description

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.

Frequently asked questions

What is CVE-2026-56129?: 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.
How severe is CVE-2026-56129?: CVE-2026-56129 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-56129 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-56129?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-56129 have an EU (EUVD) identifier?: Yes. CVE-2026-56129 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39190.
When was CVE-2026-56129 published?: CVE-2026-56129 was published on 2026-06-25.

References

Other CWE-782 vulnerabilities

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