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CVE-2026-33825

Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:1ac7dbfcdca1d59a040fef5fec459d707d01ade92b4982adc7bd10fa4394a05b
Known exploited
CISA KEV
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"Microsoft Defender Antimalware Platform","vendor":"Microsoft","versions":[{"lessThan":"4.18.26030.3011","status":"affected","version":"4.0.0.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:636f332ca5c30e515a4889a1f6dfd235b45e0451b53bb4561f471ddecd3cb29a · sha256:f94c2564ee69840f… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:636f332ca5c30e515a4889a1f6dfd235b45e0451b53bb4561f471ddecd3cb29a · sha256:f94c2564ee69840f… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-1220","description":"CWE-1220: Insufficient Granularity of Access Control","lang":"en-US","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:636f332ca5c30e515a4889a1f6dfd235b45e0451b53bb4561f471ddecd3cb29a · sha256:f94c2564ee69840f… · /containers/cna/problemTypes/0/descriptions/0

Known exploitation assertions

2 source assertions
{"cwes":["CWE-1220"],"dateAdded":"2026-04-22","dueDate":"2026-05-06","knownRansomwareCampaignUse":"Known","notes":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33825 ; https://nvd.nist.gov/vuln/detail/CVE-2026-33825","product":"Defender","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","shortDescription":"Microsoft Defender contains an insufficient granularity of access control vulnerability that could allow an authorized attacker to escalate…
  • cisa_kev_jsonknown_exploited
    urn:baitaphish:normalized-source-record:v2:88bbeaf0de43afac82cba895e1f3d14b7410e3337f5d34bcb85ea02c333c956e · sha256:16acee8334e59e44… · /vulnerabilities/79
    Open source location →
{"cwes":["CWE-1220"],"dateAdded":"2026-04-22","dueDate":"2026-05-06","knownRansomwareCampaignUse":"Known","notes":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33825 ; https://nvd.nist.gov/vuln/detail/CVE-2026-33825","product":"Defender","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","shortDescription":"Microsoft Defender contains an insufficient granularity of access control vulnerability that could allow an authorized attacker to escalate…
  • cisa_kev_jsonknown_exploited
    urn:baitaphish:normalized-source-record:v2:77ee9a4d383a4436987242c57fe3bea17b8a7c70c89c47868a95de774774e3eb · sha256:635dff916c4092c0… · /vulnerabilities/82
    Open source location →

Source references

3 source assertions
{"name":"Microsoft Defender Elevation of Privilege Vulnerability","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33825"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:636f332ca5c30e515a4889a1f6dfd235b45e0451b53bb4561f471ddecd3cb29a · sha256:f94c2564ee69840f… · /containers/cna/references/0
{"tags":["government-resource"],"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-33825"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:636f332ca5c30e515a4889a1f6dfd235b45e0451b53bb4561f471ddecd3cb29a · sha256:f94c2564ee69840f… · /containers/adp/0/references/1
{"tags":["third-party-advisory"],"url":"https://www.huntress.com/blog/nightmare-eclipse-intrusion"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:636f332ca5c30e515a4889a1f6dfd235b45e0451b53bb4561f471ddecd3cb29a · sha256:f94c2564ee69840f… · /containers/adp/0/references/0

Attribution and limitations

  • CISA Known Exploited Vulnerabilities JSON: CISA named for provenance; do not use CISA/DHS marks or imply endorsement Source →
  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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