How severe is CVE-2025-33073?

CVE-2025-33073 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-33073 being actively exploited?

Yes. CVE-2025-33073 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2025-10-20, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2025-33073?

CVE-2025-33073 primarily affects Microsoft Windows 10 1507. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-33073?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2025-33073 have an EU (EUVD) identifier?

Yes. CVE-2025-33073 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-17737. It is also flagged as exploited in the EUVD (since 2025-10-20).

When was CVE-2025-33073 published?

CVE-2025-33073 was published on 2025-06-10 and last updated on 2026-06-17.

CVE-2025-33073

CVE-2025-33073 is a high-severity vulnerability in Microsoft Windows 10 1507 with a CVSS 3.x base score of 8.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2025-10-20). The underlying weakness is classified as CWE-284.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 65% (99th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2025-10-20)
EU (EUVD) id: EUVD-2025-17737
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2025-10-20)
Weakness: CWE-284
Affected product: Microsoft Windows 10 1507
Published: 2025-06-10
Last modified: 2026-06-17

Description

Improper access control in Windows SMB allows an authorized attacker to elevate privileges over a network.

Frequently asked questions

What is CVE-2025-33073?: Improper access control in Windows SMB allows an authorized attacker to elevate privileges over a network.
How severe is CVE-2025-33073?: CVE-2025-33073 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-33073 being actively exploited?: Yes. CVE-2025-33073 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2025-10-20, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2025-33073?: CVE-2025-33073 primarily affects Microsoft Windows 10 1507. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-33073?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2025-33073 have an EU (EUVD) identifier?: Yes. CVE-2025-33073 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-17737. It is also flagged as exploited in the EUVD (since 2025-10-20).
When was CVE-2025-33073 published?: CVE-2025-33073 was published on 2025-06-10 and last updated on 2026-06-17.

References

Affected products (21)

cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:*
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_server_2008:-:sp2:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*

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