How severe is CVE-2026-40851?

CVE-2026-40851 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-40851 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-40851?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-40851 have an EU (EUVD) identifier?

Yes. CVE-2026-40851 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32150.

When was CVE-2026-40851 published?

CVE-2026-40851 was published on 2026-05-27 and last updated on 2026-06-17.

CVE-2026-40851

CVE-2026-40851 is a high-severity vulnerability with a CVSS 3.x base score of 8.4. 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-1287.

Key facts

Severity: High (CVSS 3.x base score 8.4)
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-32150
Weakness: CWE-1287
Published: 2026-05-27
Last modified: 2026-06-17

Description

A local attacker can perform a confusion attack on the cfgparser via a specially crafted file on an USB stick leading to code execution. This can result in a total loss of confidentiality, integrity and availability.

Frequently asked questions

What is CVE-2026-40851?: A local attacker can perform a confusion attack on the cfgparser via a specially crafted file on an USB stick leading to code execution. This can result in a total loss of confidentiality, integrity and availability.
How severe is CVE-2026-40851?: CVE-2026-40851 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-40851 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-40851?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-40851 have an EU (EUVD) identifier?: Yes. CVE-2026-40851 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32150.
When was CVE-2026-40851 published?: CVE-2026-40851 was published on 2026-05-27 and last updated on 2026-06-17.

References

https://www.certvde.com/en/advisories/VDE-2026-054/

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