How severe is CVE-2026-42902?

CVE-2026-42902 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-42902 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-42902?

CVE-2026-42902 affects Microsoft Powertoys. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-42902?

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-2026-42902 have an EU (EUVD) identifier?

Yes. CVE-2026-42902 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35659.

When was CVE-2026-42902 published?

CVE-2026-42902 was published on 2026-06-09 and last updated on 2026-06-17.

CVE-2026-42902

CVE-2026-42902 is a high-severity vulnerability in Microsoft Powertoys with a CVSS 3.x base score of 7.8. 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-285.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-35659
Weakness: CWE-285
Affected product: Microsoft Powertoys
Published: 2026-06-09
Last modified: 2026-06-17

Description

Improper authorization in Microsoft PowerToys allows an authorized attacker to elevate privileges locally.

Frequently asked questions

What is CVE-2026-42902?: Improper authorization in Microsoft PowerToys allows an authorized attacker to elevate privileges locally.
How severe is CVE-2026-42902?: CVE-2026-42902 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-42902 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-42902?: CVE-2026-42902 affects Microsoft Powertoys. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-42902?: 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-2026-42902 have an EU (EUVD) identifier?: Yes. CVE-2026-42902 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35659.
When was CVE-2026-42902 published?: CVE-2026-42902 was published on 2026-06-09 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42902

Affected products (1)

cpe:2.3:a:microsoft:powertoys:*:*:*:*:*:*:*:*

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