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CVE-2026-20803

Missing authentication for critical function in SQL Server allows an authorized attacker to elevate privileges over a network.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:6c9d535da1e0847d47ddbea559ceeacf7b4d28be2c7122123b5f57994f7b9406
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 3 assertions

{"product":"Microsoft SQL Server 2022 for x64-based Systems (CU 22)","vendor":"Microsoft","versions":[{"lessThan":"16.0.4230.2","status":"affected","version":"16.0.0.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f694e3157cae912fe3b761a93cc9c946dc5aea03558c4b964c9e979e50bb1c20 · sha256:97e5d7077cbce9e5… · /containers/cna/affected/1

{"platforms":["x64-based Systems"],"product":"Microsoft SQL Server 2025 for x64-based Systems (GDR)","vendor":"Microsoft","versions":[{"lessThan":"17.0.1050.2","status":"affected","version":"17.0.1050.2","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f694e3157cae912fe3b761a93cc9c946dc5aea03558c4b964c9e979e50bb1c20 · sha256:97e5d7077cbce9e5… · /containers/cna/affected/2

{"platforms":["x64-based Systems"],"product":"Microsoft SQL Server 2022 (GDR)","vendor":"Microsoft","versions":[{"lessThan":"16.0.1165.1","status":"affected","version":"16.0.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f694e3157cae912fe3b761a93cc9c946dc5aea03558c4b964c9e979e50bb1c20 · sha256:97e5d7077cbce9e5… · /containers/cna/affected/0

Affected products and versions

3 source assertions
{"product":"Microsoft SQL Server 2022 for x64-based Systems (CU 22)","vendor":"Microsoft","versions":[{"lessThan":"16.0.4230.2","status":"affected","version":"16.0.0.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f694e3157cae912fe3b761a93cc9c946dc5aea03558c4b964c9e979e50bb1c20 · sha256:97e5d7077cbce9e5… · /containers/cna/affected/1
{"platforms":["x64-based Systems"],"product":"Microsoft SQL Server 2025 for x64-based Systems (GDR)","vendor":"Microsoft","versions":[{"lessThan":"17.0.1050.2","status":"affected","version":"17.0.1050.2","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f694e3157cae912fe3b761a93cc9c946dc5aea03558c4b964c9e979e50bb1c20 · sha256:97e5d7077cbce9e5… · /containers/cna/affected/2
{"platforms":["x64-based Systems"],"product":"Microsoft SQL Server 2022 (GDR)","vendor":"Microsoft","versions":[{"lessThan":"16.0.1165.1","status":"affected","version":"16.0.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f694e3157cae912fe3b761a93cc9c946dc5aea03558c4b964c9e979e50bb1c20 · sha256:97e5d7077cbce9e5… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.2,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f694e3157cae912fe3b761a93cc9c946dc5aea03558c4b964c9e979e50bb1c20 · sha256:97e5d7077cbce9e5… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-306","description":"CWE-306: Missing Authentication for Critical Function","lang":"en-US","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f694e3157cae912fe3b761a93cc9c946dc5aea03558c4b964c9e979e50bb1c20 · sha256:97e5d7077cbce9e5… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"Microsoft SQL Server Elevation of Privilege Vulnerability","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20803"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f694e3157cae912fe3b761a93cc9c946dc5aea03558c4b964c9e979e50bb1c20 · sha256:97e5d7077cbce9e5… · /containers/cna/references/0

Attribution and limitations

  • 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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