EUVD-2026-73783
GHSA-f46f-2pjx-2v6r
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
PR:L reflects required low-privilege SQL login; AC:L because no special conditions beyond credentials; full C/I/A because privilege escalation yields complete database control.
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 a low-privileged, authenticated network attacker to elevate access rights and achieve full control over database confidentiality, integrity, and availability. The root cause is CWE-1220 (Insufficient Granularity of Access Control), meaning SQL Server fails to enforce sufficiently fine-grained permission boundaries between privilege tiers, permitting lateral movement to higher roles without authorization. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid SQL Server login at low privilege level (PR:L) - an account with at least basic connection rights to the instance. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 score is well-supported by the vector AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H: a low-privilege SQL Server account holder can reliably exploit this over the network with no user interaction and no special configuration, achieving full database-tier compromise. … 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 immediately. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct a complete inventory of all SQL Server instances across versions 2017, 2019, 2022, and 2025; document which systems handle sensitive or regulated data and identify all low-privilege database accounts that could exploit this escalation path. …
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External POC / Exploit Code
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