by Kastro
Paper/Archive/CVE-2026-67631

CVE-2026-67631

Microsoft Microsoft SQL Server 2017 (CU 31) — Microsoft SQL Server Remote Code Execution Vulnerability

EPSS 1.0%CVSS 9.8
critical.is priorityof 100
42
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 62.0.620 × 2012.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.

Affected

ProductAffectedFixed inSource
Microsoft SQL Server 2017 (CU 31)14.0.0 – < 14.0.3550.414.0.3550.4CNA
Microsoft SQL Server 2017 (GDR)14.0.0 – < 14.0.2130.414.0.2130.4CNA
Microsoft SQL Server 2019 (CU 32)15.0.0.0 – < 15.0.4490.915.0.4490.9CNA
Microsoft SQL Server 2019 (GDR)15.0.0 – < 15.0.2190.715.0.2190.7CNA
Microsoft SQL Server 2022 (CU 26)16.0.0.0 – < 16.0.4275.216.0.4275.2CNA
Microsoft SQL Server 2022 (GDR)16.0.0 – < 16.0.1200.516.0.1200.5CNA
Microsoft SQL Server 2025 (CU8)17.0.0.0 – < 17.0.4085.517.0.4085.5CNA
Microsoft SQL Server 2025 for x64-based Systems (GDR)17.0.1050.2 – < 17.0.1135.817.0.1135.8CNA

Scores by source

microsoft (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

patchmsrc.microsoft.com/update-guide/vulnerability/CVE-2026-67631