Microsoft SQL Server vulnerabilities: known CVEs & security history
Microsoft · Database · 8 tracked CVEs · 2 actively exploited · updated September 2026 · what is a CVE? →
This is the full list of known vulnerabilities (CVEs) across all Microsoft SQL Server release lines — 8 in total, with 2 actively exploited in the wild. A CVE here doesn't mean your version is affected — check Microsoft SQL Server's current status and the safe version to run.
Known Microsoft SQL Server CVEs
Actively-exploited and most-severe first. Open any CVE for full details.
| CVE | Severity | CVSS | EPSS | Year |
|---|---|---|---|---|
| CVE-2020-0618⚡ exploited | high | 8.8 | 99% | 2020 |
| CVE-2019-1068⚡ exploited | high | 8.8 | 45% | 2019 |
| CVE-2023-38169 | high | 8.8 | 1% | 2023 |
| CVE-2023-21713 | high | 8.8 | 2% | 2023 |
| CVE-2023-21705 | high | 8.8 | 1% | 2023 |
| CVE-2023-21718 | high | 7.8 | 1% | 2023 |
| CVE-2023-21704 | high | 7.8 | 0% | 2023 |
| CVE-2023-21528 | high | 7.8 | 0% | 2023 |
Is my Microsoft SQL Server version affected?
The list above spans every release. To know whether your version is affected — and the minimum safe version to upgrade to — check it directly.
Check your Microsoft SQL Server version → · Monitor Microsoft SQL Server for new CVEs →
Microsoft SQL Server vulnerabilities — frequently asked
How many known vulnerabilities does Microsoft SQL Server have?
IsItPatched tracks 8 CVEs for Microsoft SQL Server, 2 of which are actively exploited (CISA KEV). 0 are critical-severity and 8 high-severity. These span every release line — what matters is whether the version you run is affected.
Does Microsoft SQL Server have any actively-exploited vulnerabilities?
Yes — 2 Microsoft SQL Server CVEs are in CISA's Known Exploited Vulnerabilities catalog, meaning they are confirmed exploited in the wild (1 linked to ransomware). Patch these as a priority.
What is the most severe Microsoft SQL Server vulnerability?
Among tracked issues, CVE-2020-0618 (HIGH, CVSS 8.8), which is actively exploited, ranks highest — a Insecure deserialization weakness.
Is Microsoft SQL Server safe to use?
It depends on the version. The latest supported Microsoft SQL Server release (17.0.4075.5 CU8) clears the known issues; older versions may still be affected. Check the exact version you run for a verdict.
CVE data aggregated from NVD, CISA KEV and EPSS (FIRST.org). Related: Microsoft SQL Server security status · Microsoft SQL Server end-of-life · actively-exploited CVEs. Always verify against Microsoft's advisories — see our disclaimer.