What is CVE-2026-94513?

CVE-2026-94513 is a high-severity vulnerability in Microsoft SQL Server 2022 For X64-Based Systems (Cu27), classified under Heap-based Buffer Overflow. CVSS score: 8.0/10. Published 2026-11-10.

How severe is CVE-2026-94513?

High severity. CVSS v3 base score is 8.0 out of 10.

Buffer overflow in Microsoft SQL Server 2022 For X64-Based Systems (Cu27)

CVE-2026-94513

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

Vulnerability class: Buffer Overflow

Published 2026-11-10 · last modified 2026-11-10.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-94513 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-94513?: CVE-2026-94513 is a high-severity vulnerability in Microsoft SQL Server 2022 For X64-Based Systems (Cu27), classified under Heap-based Buffer Overflow. CVSS score: 8.0/10. Published 2026-11-10.
How severe is CVE-2026-94513?: High severity. CVSS v3 base score is 8.0 out of 10.