CVE intelligence

CVE-2026-77486

Vulnerability intelligence

Published Sep 8, 2026Sources checked Oct 28, 2026

8.8HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2026-77486 and is rated High severity with a CVSS score of 8.8. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Microsoft Security Response Center guidance

Vendor revision: Sep 8, 2026

Vendor remediation details

Install KB5122775. Install KB5122773. Install KB5122774. Install KB5122772.

Vendor-listed releases

14.0.2130.4
15.0.2190.7
14.0.3550.4
15.0.4490.9

CISA KEVNot listedBased on the latest collected catalog

EPSS0.8%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-77486?

Integer overflow or wraparound in SQL Server allows an unauthorized attacker to execute code over a network.

Source: NVD