ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-33825

Microsoft Defender Insufficient Granularity of Access Control Vulnerability

Published Apr 14, 2026 · catalog updated Jul 24, 2026 · Microsoft Defender

Patch now

CVE-2026-33825 is in the CISA known-exploited catalog, due May 6, 2026. Confirm Microsoft Defender against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High7.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
0.40%
Remediation
Remediation guidance
Affected products
cpe microsoft/defender antimalware platform · vendor Microsoft Defender

Microsoft Defender contains an insufficient granularity of access control vulnerability that could allow an authorized attacker to escalate privileges locally.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/defender antimalware platformversion unspecified
  • vendor Microsoft Defenderversion unspecified

How to fix CVE-2026-33825

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2026-33825 is in the CISA known-exploited catalog, due May 6, 2026. Confirm Microsoft Defender against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

What should an analyst verify?

CWE-1220. EPSS 0.40%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 14, 2026 · Catalog

    Detected

    Microsoft Defender contains an insufficient granularity of access control vulnerability that could allow an authorized attacker to escalate privileges locally.

  2. Apr 22, 2026 · CISA KEV

    Known exploited

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  3. May 6, 2026 · CISA KEV

    Remediation due

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  4. Jul 24, 2026 · Catalog

    Updated

    Microsoft Defender contains an insufficient granularity of access control vulnerability that could allow an authorized attacker to escalate privileges locally.

  5. Jul 24, 2026 · NIST NVD

    Updated

    Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally.

Sources

  • CISA KEVConfirmed exploitationCVE-2026-33825

    Microsoft Defender contains an insufficient granularity of access control vulnerability that could allow an authorized attacker to escalate privileges locally.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2026-33825

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-33825

    30-day exploitation probability 0.4%

    first.org
  • NIST NVDVulnerability recordCVE-2026-33825

    Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2026-33825

    Microsoft Defender contains an insufficient granularity of access control vulnerability that could allow an authorized attacker to escalate privileges locally.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.