CVE-2026-73028: SQL Server Elevation of Privilege Vulnerability

highCVSS 8.8CVE-2026-73028

Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.

Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 8.8
Published: 2026-09-08
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-73028

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-730280.54% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 44% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-73028	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for SQL Server Elevation

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

highCVE-2026-77487: Improper access control in SQL Server allows an authorized attacker to elevate privileges over…nvd · 2026-09-08
highCVE-2026-77485: Use after free in SQL Server allows an authorized attacker to elevate privileges locally.nvd · 2026-09-08
highCVE-2026-77483: Weak authentication in SQL Server allows an authorized attacker to elevate privileges over a n…nvd · 2026-09-08
highCVE-2026-77480: Insufficient granularity of access control in SQL Server allows an authorized attacker to elev…nvd · 2026-09-08
highCVE-2026-73028: Improper access control in SQL Server allows an authorized attacker to elevate privileges over…nvd · 2026-09-08
highCVE-2026-67381: Heap-based buffer overflow in SQL Server allows an authorized attacker to elevate privileges o…nvd · 2026-09-08