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CVE-2026-66819ImportantEoPNetwork

Microsoft SQL Server Elevation of Privilege Vulnerability

MSRC advisory NVD CVE.org

Assessment

Improper neutralization of special elements used in an sql command ('sql injection') in SQL Server allows an authorized attacker to elevate privileges over a network.

Severity
Important
CVSS base score
8.8
Impact
Elevation of Privilege
Exploitation detected
No known exploitation (MSRC assessment)
Exploitability
Exploitation Less Likely
Publicly disclosed
No (MSRC assessment)
EPSS · 30-day forecast
1.0%FIRST forecast dated 10 Nov 2026, for the following 30 days · FIRST percentile 62.7% · about EPSS
Customer action
Required: follow the MSRC remediation guidance
More details
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Public detection template
No Nuclei template is listed in the current collected catalog
Component
SQL Server
Weakness
CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Issued by
Microsoft
Published
8 Sep 2026 · September 2026
Last revised
8 Sep 2026
CVSS 3.1 base metricsRed raises the risk · green lowers it
Attack vector
NetworkAV:N
Attack complexity
LowAC:L
Privileges required
LowPR:L
User interaction
NoneUI:N
Scope
UnchangedS:U
Confidentiality
HighC:H
Integrity
HighI:H
Availability
HighA:H

Updates that fix it

8 KBs
KBTypeRestartApplies toOther CVEs
KB5122768 Security UpdateRequiredMicrosoft SQL Server 2022 for x64-based Systems (CU 26)All CVEs in KB5122768
KB5122769 Security UpdateRequiredMicrosoft SQL Server 2025 for x64-based Systems (CU8)All CVEs in KB5122769
KB5122770 Security UpdateRequiredMicrosoft SQL Server 2025 for x64-based Systems (GDR)All CVEs in KB5122770
KB5122771 Security UpdateRequiredMicrosoft SQL Server 2022 for x64-based Systems (GDR)All CVEs in KB5122771
KB5122772 Security UpdateRequiredMicrosoft SQL Server 2019 for x64-based Systems (CU 32)All CVEs in KB5122772
KB5122773 Security UpdateRequiredMicrosoft SQL Server 2019 for x64-based Systems (GDR)All CVEs in KB5122773
KB5122774 Security UpdateRequiredMicrosoft SQL Server 2017 for x64-based Systems (CU 31)All CVEs in KB5122774
KB5122775 Security UpdateRequiredMicrosoft SQL Server 2017 for x64-based Systems (GDR)All CVEs in KB5122775

What changed

  1. Detection template: Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed
  2. Detection template: No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
  3. Detection template: Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed
  4. Detection template: No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
  5. Detection template: No Nuclei template listed · Customer action: Required: apply the update → Required: follow the MSRC remediation guidance · Public disclosure: No → No (MSRC assessment) · Exploitation detected: Not reported by MSRC → No known exploitation (MSRC assessment)
  6. Detection template: Unknown: exploit-code evidence is incomplete or retained → No Nuclei template listed · CISA KEV: Unknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
  7. Detection template: No Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained · CISA KEV: Not listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
Page history

Changes are dated when recorded; day views use the last saved version from that UTC day, and citations stay fixed.

Cite this version
Field-level log (61)

Up to 100 recent field edits are shown; older edits may be outside retention.

  1. 10 Nov 2026 · 18:32:11 UTC EPSS1.0%; scored 9 Nov 2026 → 1.0%; scored 10 Nov 2026
  2. 9 Nov 2026 · 22:24:37 UTC EPSS1.0%; scored 8 Nov 2026 → 1.0%; scored 9 Nov 2026
  3. 8 Nov 2026 · 15:16:05 UTC EPSS1.0%; scored 7 Nov 2026 → 1.0%; scored 8 Nov 2026
  4. 7 Nov 2026 · 16:12:44 UTC EPSS1.0%; scored 6 Nov 2026 → 1.0%; scored 7 Nov 2026
  5. 6 Nov 2026 · 19:15:37 UTC EPSS1.0%; scored 5 Nov 2026 → 1.0%; scored 6 Nov 2026
  6. 6 Nov 2026 · 17:32:22 UTC Public detection templateUnknown: detection-template evidence is incomplete or retained → No Nuclei template listed
  7. 6 Nov 2026 · 17:32:22 UTC Source coverage: public-exploit-codeIncomplete → Current
  8. 6 Nov 2026 · 17:32:22 UTC Source coverage: first-epssIncomplete → Current
  9. 6 Nov 2026 · 17:32:22 UTC Source coverage: msrc-cvrfIncomplete → Current
  10. 6 Nov 2026 · 16:31:02 UTC Public detection templateNo Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
  11. 6 Nov 2026 · 16:31:02 UTC Source coverage: public-exploit-codeCurrent → Incomplete
  12. 6 Nov 2026 · 16:31:02 UTC Source coverage: first-epssCurrent → Incomplete
  13. 6 Nov 2026 · 16:31:02 UTC Source coverage: msrc-cvrfCurrent → Incomplete
  14. 5 Nov 2026 · 23:42:03 UTC EPSS1.0%; scored 4 Nov 2026 → 1.0%; scored 5 Nov 2026
  15. 5 Nov 2026 · 02:36:20 UTC EPSS1.0%; scored 3 Nov 2026 → 1.0%; scored 4 Nov 2026
  16. 4 Nov 2026 · 03:04:37 UTC EPSS1.0%; scored 2 Nov 2026 → 1.0%; scored 3 Nov 2026
  17. 3 Nov 2026 · 01:53:36 UTC EPSS1.0%; scored 1 Nov 2026 → 1.0%; scored 2 Nov 2026
  18. 2 Nov 2026 · 17:30:39 UTC Public detection templateUnknown: detection-template evidence is incomplete or retained → No Nuclei template listed
  19. 2 Nov 2026 · 17:30:39 UTC Source coverage: public-exploit-codeIncomplete → Current
  20. 2 Nov 2026 · 17:30:39 UTC Source coverage: first-epssIncomplete → Current
  21. 2 Nov 2026 · 17:30:39 UTC Source coverage: msrc-cvrfIncomplete → Current
  22. 2 Nov 2026 · 16:27:39 UTC Public detection templateNo Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
  23. 2 Nov 2026 · 16:27:39 UTC Source coverage: public-exploit-codeCurrent → Incomplete
  24. 2 Nov 2026 · 16:27:39 UTC Source coverage: first-epssCurrent → Incomplete
  25. 2 Nov 2026 · 16:27:39 UTC Source coverage: msrc-cvrfCurrent → Incomplete
  26. 2 Nov 2026 · 00:36:51 UTC EPSS1.0%; scored 31 Oct 2026 → 1.0%; scored 1 Nov 2026
  27. 31 Oct 2026 · 18:22:15 UTC EPSS1.0%; scored 30 Oct 2026 → 1.0%; scored 31 Oct 2026
  28. 30 Oct 2026 · 18:02:45 UTC EPSS1.0%; scored 29 Oct 2026 → 1.0%; scored 30 Oct 2026
  29. 29 Oct 2026 · 20:19:26 UTC Public detection templateNo Nuclei template listed
  30. 29 Oct 2026 · 20:19:26 UTC Customer actionRequired: apply the update → Required: follow the MSRC remediation guidance
  31. 29 Oct 2026 · 20:19:26 UTC Publicly disclosedNo → No (MSRC assessment)
  32. 29 Oct 2026 · 20:19:26 UTC Exploitation detectedNot reported by MSRC → No known exploitation (MSRC assessment)
  33. 29 Oct 2026 · 18:33:30 UTC EPSS1.0%; scored 28 Oct 2026 → 1.0%; scored 29 Oct 2026
  34. 28 Oct 2026 · 20:00:33 UTC EPSS1.0%; scored 27 Oct 2026 → 1.0%; scored 28 Oct 2026
  35. 27 Oct 2026 · 15:48:13 UTC EPSS1.0%; scored 26 Oct 2026 → 1.0%; scored 27 Oct 2026
  36. 26 Oct 2026 · 23:57:09 UTC EPSS1.0%; scored 25 Oct 2026 → 1.0%; scored 26 Oct 2026
  37. 25 Oct 2026 · 17:12:51 UTC EPSS1.0%; scored 24 Oct 2026 → 1.0%; scored 25 Oct 2026
  38. 25 Oct 2026 · 01:34:18 UTC EPSS1.0%; scored 23 Oct 2026 → 1.0%; scored 24 Oct 2026
  39. 23 Oct 2026 · 15:51:28 UTC EPSS1.0%; scored 22 Oct 2026 → 1.0%; scored 23 Oct 2026
  40. 23 Oct 2026 · 09:33:49 UTC Public exploit codeUnknown: exploit-code evidence is incomplete or retained → No Nuclei template listed
  41. 23 Oct 2026 · 09:33:49 UTC CISA KEVUnknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
  42. 23 Oct 2026 · 09:33:49 UTC Source coverage: public-exploit-codeIncomplete → Current
  43. 23 Oct 2026 · 09:33:49 UTC Source coverage: first-epssIncomplete → Current
  44. 23 Oct 2026 · 09:33:49 UTC Source coverage: cisa-kevIncomplete → Current
  45. 23 Oct 2026 · 09:33:49 UTC Source coverage: msrc-cvrfIncomplete → Current
  46. 23 Oct 2026 · 08:31:50 UTC Public exploit codeNo Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained
  47. 23 Oct 2026 · 08:31:50 UTC CISA KEVNot listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
  48. 23 Oct 2026 · 08:31:50 UTC Source coverage: public-exploit-codeCurrent → Incomplete
  49. 23 Oct 2026 · 08:31:50 UTC Source coverage: first-epssCurrent → Incomplete
  50. 23 Oct 2026 · 08:31:50 UTC Source coverage: cisa-kevCurrent → Incomplete
  51. 23 Oct 2026 · 08:31:50 UTC Source coverage: msrc-cvrfCurrent → Incomplete
  52. 22 Oct 2026 · 17:33:15 UTC EPSS1.0%; scored 21 Oct 2026 → 1.0%; scored 22 Oct 2026
  53. 21 Oct 2026 · 21:47:24 UTC EPSS1.0%; scored 20 Oct 2026 → 1.0%; scored 21 Oct 2026
  54. 20 Oct 2026 · 20:53:31 UTC EPSS1.0%; scored 19 Oct 2026 → 1.0%; scored 20 Oct 2026
  55. 19 Oct 2026 · 15:12:40 UTC EPSS1.0%; scored 18 Oct 2026 → 1.0%; scored 19 Oct 2026
  56. 18 Oct 2026 · 14:54:30 UTC EPSS1.0%; scored 16 Oct 2026 → 1.0%; scored 18 Oct 2026
  57. 18 Oct 2026 · 14:54:30 UTC Link: September 2026/security?release=2026-Sep#cves
  58. 16 Oct 2026 · 16:13:25 UTC EPSS1.0%; scored 15 Oct 2026 → 1.0%; scored 16 Oct 2026
  59. 15 Oct 2026 · 21:30:54 UTC EPSS1.0%; scored 14 Oct 2026 → 1.0%; scored 15 Oct 2026
  60. 15 Oct 2026 · 01:07:54 UTC EPSS1.0%; scored 13 Oct 2026 → 1.0%; scored 14 Oct 2026
  61. 14 Oct 2026 · 11:22:42 UTC Source coverage: msrc-cvrfIncomplete → Current

Explore global source statements, affected packages and advisory history for CVE-2026-66819. The catalog has a separate collection scope from Microsoft release records.

Collected exploitation and prediction evidence

Risk source coverage

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

Dated risk observations

Risk history is separate from CNA/OSV content history. Daily score drift is retained but only an upward crossing of 10% triggers the prediction change event.

Immutable source observations

4 recorded revisions

Each citation identifies one complete source statement. Source modification dates and the time this installation observed them are distinct. Latest history includes records historically associated by source identifiers; a removed alias is not a current equivalence claim. Exact citations show that source record's own earlier observations. Failed reads and unchanged polls do not rewrite history.

10 Nov 2026 23:21:22 UTC

Microsoft SQL Server Elevation of Privilege Vulnerability

cve-program · CVE-2026-66819 · Published

31 Oct 2026 18:04:47 UTC

Microsoft SQL Server Elevation of Privilege Vulnerability

cve-program · CVE-2026-66819 · Published

30 Oct 2026 22:45:26 UTC

Microsoft SQL Server Elevation of Privilege Vulnerability

cve-program · CVE-2026-66819 · Published

23 Oct 2026 15:48:27 UTC

Microsoft SQL Server Elevation of Privilege Vulnerability

cve-program · CVE-2026-66819 · Published

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 11 Nov 03:41 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current

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