EUVD-2026-73375
GHSA-jv4w-r899-fr8h
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-accessible service exploitable by any valid low-privilege login with no interaction; full triad impact consistent with privilege escalation to database administrative level.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Insufficient granularity of access control in SQL Server allows an authorized attacker to elevate privileges over a network.
AnalysisAI
Privilege escalation in Microsoft SQL Server allows an authenticated low-privileged network attacker to gain complete control over affected database instances across SQL Server 2017, 2019, 2022, and 2025. The flaw stems from CWE-1220 (Insufficient Granularity of Access Control), where the access control model fails to enforce fine-grained permission boundaries, permitting a standard database login to exceed its intended privilege scope. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must possess a valid SQL Server login with at minimum low-level database access (PR:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 score with AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H describes a straightforward, low-complexity network privilege escalation requiring only a valid database credential - no user interaction, no race condition, no special network position. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the vendor-released patches for the applicable SQL Server servicing branch: 2017 GDR should be updated to 14.0.2130.4 or later; 2017 CU 31 track to 14.0.3550.4 or later; 2019 GDR to 15.0.2190.7 or later; 2019 CU 32 to 15.0.4490.9 or later; 2022 GDR to 16.0.1200.5 or later; 2022 CU 26 to 16.0.4275.2 or later; 2025 GDR to 17.0.1135.8 or later; 2025 CU8 to 17.0.4085.5 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all SQL Server 2017, 2019, 2022, and 2025 instances in your environment and document which accounts have low-privilege access. …
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Same technique Privilege Escalation
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External POC / Exploit Code
Leaving vuln.today