EUVD-2026-73318
GHSA-cp2c-9r38-r3hx
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-reachable heap overflow requiring a valid SQL login (PR:L); low complexity once authenticated; full code execution yields C:H/I:H/A:H with no scope change.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.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 2017 through 2025 enables an authenticated network attacker with low-level database credentials to achieve full remote code execution on the SQL Server host. The CVSS 8.8 (PR:L) rating reflects that any valid SQL Server login - not just a DBA - can trigger the overflow, making this dangerous in environments with broad user bases or shared credentials. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid SQL Server account with at least the minimum privileges needed to establish a database connection - the description explicitly states 'authorized attacker,' and PR:L in the CVSS vector confirms this. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 score with AV:N/AC:L/PR:L/UI:N accurately captures the threat profile: this is a low-complexity, network-reachable code execution flaw that demands only a valid SQL Server login, not administrative access. … 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 security updates corresponding to your SQL Server version and update track: SQL Server 2017 GDR → 14.0.2130.4; SQL Server 2017 CU 31 → 14.0.3550.4; SQL Server 2019 GDR → 15.0.2190.7; SQL Server 2019 CU 32 → 15.0.4490.9; SQL Server 2022 GDR → 16.0.1200.5; SQL Server 2022 CU 26 → 16.0.4275.2; SQL Server 2025 CU8 → 17.0.4085.5; SQL Server 2025 GDR → 17.0.1135.8. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and inventory all SQL Server 2017, 2019, 2022, and 2025 instances across production and non-production environments. …
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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