EUVD-2026-73301
GHSA-8833-9p3x-vwf3
Severity by source
AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
PR:L reflects the 'authorized attacker' prerequisite; AC:H reflects modern Windows exploit mitigations; S:C reflects OS-level scope escape potential.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Stack-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
AnalysisAI
Stack-based buffer overflow in Microsoft SQL Server 2019, 2022, and 2025 enables an authenticated network attacker with low-level privileges to execute arbitrary code, with scope change enabling impact beyond the SQL Server process itself. The vulnerability carries CVSS 8.5 (S:C) with high confidentiality, integrity, and availability impact, indicating that successful exploitation can compromise not just the database engine but potentially the underlying OS. …
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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-level privileges (PR:L) - anonymous or unauthenticated access is not sufficient. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.5 score with S:C and C:H/I:H/A:H represents a serious but not trivially exploited vulnerability. … 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 | The primary fix is to apply the vendor-released cumulative updates or GDR patches from Microsoft: SQL Server 2019 CU32 users should upgrade to 15.0.4490.9; SQL Server 2019 GDR users should upgrade to 15.0.2190.7; SQL Server 2022 CU26 users should upgrade to 16.0.4275.2; SQL Server 2022 GDR users should upgrade to 16.0.1200.5; SQL Server 2025 CU8 users should upgrade to 17.0.4085.5; SQL Server 2025 GDR (x64) users should upgrade to 17.0.1135.8. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and catalog all Microsoft SQL Server 2019, 2022, and 2025 instances across your infrastructure, noting network exposure and which database accounts hold elevated privileges. …
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Same weakness CWE-121 – Stack-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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