EUVD-2026-73784
GHSA-pqv8-pg4r-hqpq
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-reachable with low-privilege auth required; low complexity and no interaction needed; full triad impact consistent with sysadmin-level escalation.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
5DescriptionCVE.org
Weak authentication in SQL Server allows an authorized attacker to elevate privileges over a network.
AnalysisAI
Privilege escalation in Microsoft SQL Server allows a network-authenticated low-privileged attacker to elevate to higher database roles via a weak authentication mechanism (CWE-1390). Affected releases span SQL Server 2017 through 2025 across both General Distribution Release (GDR) and Cumulative Update (CU) servicing branches. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid SQL Server or Windows-authenticated login with at least low-privilege access to the target instance - the CVSS PR:L confirms this. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) reflects a high-severity, straightforward network exploit requiring only a valid low-privileged SQL or Windows login - a credential that may exist in many enterprise deployments via application service accounts. … 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 Microsoft-released security update for your SQL Server version and servicing channel: SQL Server 2017 GDR → 14.0.2130.4, 2017 CU 31 → 14.0.3550.4; SQL Server 2019 GDR → 15.0.2190.7, 2019 CU 32 → 15.0.4490.9; SQL Server 2022 GDR → 16.0.1200.5, 2022 CU 26 → 16.0.4275.2; SQL Server 2025 GDR → 17.0.1135.8, 2025 CU 8 → 17.0.4085.5. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and catalog all SQL Server 2017-2025 instances in your environment and assess their criticality and data sensitivity. …
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Same weakness CWE-1390 – Weak Authentication
View allSame technique Privilege Escalation
View allShare
External POC / Exploit Code
Leaving vuln.today