How severe is CVE-2025-55334?

CVE-2025-55334 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-55334 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-55334?

CVE-2025-55334 primarily affects Microsoft Windows 11 22h2. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-55334?

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

Does CVE-2025-55334 have an EU (EUVD) identifier?

Yes. CVE-2025-55334 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-34340.

When was CVE-2025-55334 published?

CVE-2025-55334 was published on 2025-10-14 and last updated on 2026-06-17.

CVE-2025-55334

CVE-2025-55334 is a medium-severity vulnerability in Microsoft Windows 11 22h2 with a CVSS 3.x base score of 6.2. 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-312.

Key facts

Severity: Medium (CVSS 3.x base score 6.2)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-34340
Weakness: CWE-312
Affected product: Microsoft Windows 11 22h2
Published: 2025-10-14
Last modified: 2026-06-17

Description

Cleartext storage of sensitive information in Windows Kernel allows an unauthorized attacker to bypass a security feature locally.

Frequently asked questions

What is CVE-2025-55334?: Cleartext storage of sensitive information in Windows Kernel allows an unauthorized attacker to bypass a security feature locally.
How severe is CVE-2025-55334?: CVE-2025-55334 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-55334 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-55334?: CVE-2025-55334 primarily affects Microsoft Windows 11 22h2. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-55334?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-55334 have an EU (EUVD) identifier?: Yes. CVE-2025-55334 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-34340.
When was CVE-2025-55334 published?: CVE-2025-55334 was published on 2025-10-14 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55334

Affected products (4)

cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:*:*

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