What is CVE-2026-68786?

CVE-2026-68786 is a high-severity vulnerability in Microsoft SQL Server 2017 (Cu 31), classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-09-08.

How severe is CVE-2026-68786?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Microsoft SQL Server 2017 (Cu 31)

CVE-2026-68786

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

Vulnerability class: Buffer Overflow

Published 2026-09-08 · last modified 2026-09-15.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (59.7th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

Microsoft SQL Server Remote Code Execution Vulnerability (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-68786?: CVE-2026-68786 is a high-severity vulnerability in Microsoft SQL Server 2017 (Cu 31), classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-09-08.
How severe is CVE-2026-68786?: High severity. CVSS v3 base score is 8.8 out of 10.