EUVD-2026-73298
GHSA-4259-xrjq-w65p
Severity by source
AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Network-accessible SQL Server, PR:L for required low-privilege credential, AC:H for memory-condition complexity; S:C and full C/I/A reflect OS-level RCE potential.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Untrusted pointer dereference in SQL Server allows an authorized attacker to execute code over a network.
AnalysisAI
Remote code execution in Microsoft SQL Server allows an authenticated low-privilege attacker to exploit an untrusted pointer dereference (CWE-822) over the network, achieving full compromise of the host with scope change beyond the database engine. Affected instances span SQL Server 2019, 2022, and 2025 across both Cumulative Update and GDR servicing branches. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid SQL Server login with at minimum low-privilege database access - this aligns with the CVSS PR:L metric and the description's phrasing 'authorized attacker.' The SQL Server instance must be reachable over the network (default port 1433). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 8.5 is credible given the scope change and full C:H/I:H/A:H triad, though AC:H moderates the immediate risk by requiring specific memory or race conditions for reliable exploitation. … 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 cumulative update or GDR patch for the installed SQL Server version: upgrade SQL Server 2019 CU32 to 15.0.4490.9 or later, SQL Server 2019 GDR to 15.0.2190.7 or later, SQL Server 2022 CU26 to 16.0.4275.2 or later, SQL Server 2022 GDR to 16.0.1200.5 or later, SQL Server 2025 CU8 to 17.0.4085.5 or later, and SQL Server 2025 GDR to 17.0.1135.8 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and catalog all SQL Server 2019, 2022, and 2025 deployments, noting which users or services have low-privilege database access and which systems are internet-exposed or connected to trusted networks. …
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Same weakness CWE-822 – Untrusted Pointer Dereference
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External POC / Exploit Code
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