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ExploitedIn CISA KEVFix available

CVE-2025-33073

Exploitation confirmed. First attested on 2025-10-20 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2025-06-10
  • WeaknessCWE-284

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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

Timeline

dates in UTC
  1. 2025-06-1017:23CVE publishedNVD
  2. 2025-06-15Exploit-DB entryExploit-DB
  3. 2025-10-20Added to the CISA KEV catalogCISA KEV
  4. 2025-10-20Listed as exploited by GCVEGCVE
  5. 2025-10-20Exploitation first reportedCISA KEV
  6. 2025-10-2103:55SSVC exploitation set to activeCISA-ADP

Versions per branch

NVD
Microsoft windows server 2008
BranchAffectedFixed in
—all versionsno fix published
—= r2no fix published
Microsoft windows server 2012
BranchAffectedFixed in
—all versionsno fix published
—= r2no fix published
Microsoft windows 10 1507
BranchAffectedFixed in
10.0< 10.0.10240.2103410.0.10240.21034

12 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA25 products

As microsoft, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Microsoft Windows 10 Version 1507

    platforms: 32-bit Systems, x64-based Systems

    Affected
    • ≥ 10.0.10240.0, < 10.0.10240.21034fixed in 10.0.10240.21034custom
  • Microsoft Windows 10 Version 1607

    platforms: 32-bit Systems, x64-based Systems

    Affected
    • ≥ 10.0.14393.0, < 10.0.14393.8148fixed in 10.0.14393.8148custom
  • Microsoft Windows 10 Version 1809

    platforms: 32-bit Systems, x64-based Systems

    Affected
    • ≥ 10.0.17763.0, < 10.0.17763.7434fixed in 10.0.17763.7434custom
  • Microsoft Windows 10 Version 21H2

    platforms: 32-bit Systems, ARM64-based Systems, x64-based Systems

    Affected
    • ≥ 10.0.19044.0, < 10.0.19044.5965fixed in 10.0.19044.5965custom
  • Microsoft Windows 10 Version 22H2

    platforms: 32-bit Systems, ARM64-based Systems, x64-based Systems

    Affected
    • ≥ 10.0.19045.0, < 10.0.19045.5965fixed in 10.0.19045.5965custom
  • Microsoft Windows 11 version 22H2

    platforms: ARM64-based Systems, x64-based Systems

    Affected
    • ≥ 10.0.22621.0, < 10.0.22621.5472fixed in 10.0.22621.5472custom

19 more products in the CVE record.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-02-20

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • python-impacketopenSUSE:Tumbleweedall versions · fixed in 0.13.1-1.1

Full record on NVD

Fix

  1. CISA’s required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.due 2025-11-10

Advisories and patches

Detection

read 2026-11-01 01:02 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-52330
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2025-10-20
Patch Due Date
2025-11-10
Ransomware Use
Unknown
Required Action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2025-06-10
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-cfjg-2jr6-cgph

Frequently asked questions

What is CVE-2025-33073?

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

Is CVE-2025-33073 actively exploited?

Yes. CVE-2025-33073 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2025-11-10.

What is the CVSS score for CVE-2025-33073?

CVE-2025-33073 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record