EUVD-2026-73319
GHSA-rw49-qwx8-9x7q
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
PR:L confirmed by authenticated requirement; C:H for memory disclosure potential; I:N/A:N because over-read causes no write corruption or crash.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Buffer over-read in SQL Server allows an authorized attacker to disclose information over a network.
AnalysisAI
Buffer over-read (CWE-126) in Microsoft SQL Server 2019, 2022, and 2025 enables an authenticated low-privilege network attacker to trigger server-side memory disclosure. The flaw causes the SQL Server engine to read past an allocated buffer boundary and return excess memory contents to the caller over the network connection, potentially exposing in-memory data from other sessions or internal state. …
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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 minimum low-privilege (PR:L) network access to the target SQL Server instance on TCP port 1433 (or the configured listener port). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 6.5 with vector AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N scores high confidentiality impact reachable over the network with only low-privilege credentials, which is noteworthy for an information-disclosure class. … 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 Microsoft's released patches: upgrade SQL Server 2019 CU installations to 15.0.4490.9 or later, SQL Server 2019 GDR installations to 15.0.2190.7 or later, SQL Server 2022 CU installations to 16.0.4275.2 or later, SQL Server 2022 GDR installations to 16.0.1200.5 or later, SQL Server 2025 CU installations to 17.0.4085.5 or later, and SQL Server 2025 GDR installations to 17.0.1135.8 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-126 – Buffer Over-read
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External POC / Exploit Code
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