How severe is CVE-2026-34350?

CVE-2026-34350 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-34350 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34350?

CVE-2026-34350 affects Microsoft Windows Server 2025. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34350?

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

Does CVE-2026-34350 have an EU (EUVD) identifier?

Yes. CVE-2026-34350 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29606.

When was CVE-2026-34350 published?

CVE-2026-34350 was published on 2026-05-12 and last updated on 2026-06-17.

CVE-2026-34350

CVE-2026-34350 is a medium-severity vulnerability in Microsoft Windows Server 2025 with a CVSS 3.x base score of 6.5. 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-476.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-29606
Weakness: CWE-476
Affected product: Microsoft Windows Server 2025
Published: 2026-05-12
Last modified: 2026-06-17

Description

Null pointer dereference in Windows Storport Miniport Driver allows an unauthorized attacker to deny service over a network.

Frequently asked questions

What is CVE-2026-34350?: Null pointer dereference in Windows Storport Miniport Driver allows an unauthorized attacker to deny service over a network.
How severe is CVE-2026-34350?: CVE-2026-34350 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-34350 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34350?: CVE-2026-34350 affects Microsoft Windows Server 2025. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34350?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-34350 have an EU (EUVD) identifier?: Yes. CVE-2026-34350 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29606.
When was CVE-2026-34350 published?: CVE-2026-34350 was published on 2026-05-12 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34350

Affected products (1)

cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*

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