Microsoft has released security updates addressing CVE-2025-47997, a newly disclosed vulnerability in SQL Server. This flaw highlights the importance of keeping database systems up to date, as it could potentially expose sensitive information to attackers.
What Is CVE-2025-47997?
CVE-2025-47997 is a race condition vulnerability in SQL Server. The bug occurs because of improper synchronization when multiple processes access shared resources. As a result, attackers with low-level authenticated access could potentially intercept or read SQL statements from other sessions.
While this issue does not allow direct system takeover, it poses a serious confidentiality risk. Sensitive data such as query logic, stored procedures, or even credentials could be exposed.
Affected SQL Server Versions
The vulnerability impacts multiple versions of Microsoft SQL Server:
- SQL Server 2016 SP3 (GDR) – versions before 13.0.6470.1
- SQL Server 2017 (GDR & CU 31) – before 14.0.2085.1 (GDR) or 14.0.3505.1 (CU 31)
- SQL Server 2019 (GDR & CU 32) – before 15.0.2145.1 (GDR) or 15.0.4445.1 (CU 32)
- SQL Server 2022 (GDR & CU 20) – before 16.0.1150.1 (GDR) or 16.0.4212.1 (CU 20)
Severity and Risk
- CVSS Score: 6.5 (Medium)
- Vector:
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Impact: High on Confidentiality, none on Integrity or Availability
At this time, there are no known exploits in the wild. The Exploit Prediction Scoring System (EPSS) currently assigns a low likelihood of exploitation. However, due to the sensitive nature of exposed data, the issue should not be ignored.
How to Mitigate CVE-2025-47997
Microsoft has addressed this vulnerability in the September 2025 Patch Tuesday updates. To stay secure:
- Apply the latest updates for your SQL Server version.
- Verify your environment against the patched build numbers listed above.
- Limit user privileges to reduce potential attack vectors.
- Monitor SQL Server logs for unusual activity.
Why This Matters
For organizations relying on SQL Server, confidentiality is critical. Even if this bug doesn’t directly impact system availability or integrity, the exposure of sensitive data can lead to compliance issues, financial risks, or competitive disadvantages.
Staying proactive with patch management is the best defense.
Key Takeaways
- CVE-2025-47997 is a race condition vulnerability in SQL Server.
- It mainly threatens data confidentiality by allowing exposure of SQL queries.
- Patches are available via Microsoft’s September 2025 security updates.
- Administrators should update affected systems immediately.
🔒 Bottom line: If your organization uses SQL Server 2016, 2017, 2019, or 2022, make sure to apply the September 2025 updates as soon as possible to eliminate the risk of data exposure.
