EUVD-2026-73185
GHSA-9wr9-7c42-p6f9
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network reachable via TCP, low complexity heap overflow, requires authenticated low-privilege SQL login, code execution yields full C/I/A impact.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
AnalysisAI
Heap-based buffer overflow in Microsoft SQL Server enables an authenticated, low-privileged network attacker to achieve remote code execution with full confidentiality, integrity, and availability impact. Affected versions span SQL Server 2017 through 2025 across both Cumulative Update and General Distribution Release (GDR) servicing tracks. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires valid SQL Server authentication credentials with at minimum a low-privilege login (PR:L per CVSS). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 score reflects a genuinely high-severity vulnerability: network reachable (AV:N), low complexity (AC:L), requires only low-privilege authentication (PR:L), no user interaction (UI:N), and yields full C:H/I:H/A:H impact consistent with code execution. … 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 updates or GDR patches for the relevant SQL Server version: upgrade SQL Server 2017 CU31 to 14.0.3550.4 or later, 2017 GDR to 14.0.2130.4 or later; upgrade SQL Server 2019 CU32 to 15.0.4490.9 or later, 2019 GDR to 15.0.2190.7 or later; upgrade SQL Server 2022 CU26 to 16.0.4275.2 or later, 2022 GDR to 16.0.1200.5 or later; upgrade SQL Server 2025 CU8 to 17.0.4085.5 or later, 2025 GDR to 17.0.1135.8 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all SQL Server 2017-2025 installations in your environment (both CU and GDR tracks) and identify which are network-accessible or grant access to low-privileged user accounts. …
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Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
Leaving vuln.today