CVE-2026-58599

CVE

Threat entity extracted from intelligence sources

Frequency

occurrences

First Seen

September 8, 2026

Last Seen

September 9, 2026

API

Exploited in Wild

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Ransomware Use

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Public Exploits

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Attack Vector

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Vulnerability Overview

Exploitation Activity

Exploitation Intelligence

Multiple CVEs Exploited in Cybersecurity Threats: September 202674.9

In September 2026, several critical vulnerabilities were disclosed, notably CVE-2026-81963 and CVE-2026-85880, both of which are actively exploited. CVE-2026-81963, affecting Windows Update Stack, allows local privilege escalation without user interaction. CVE-2026-85880, a heap-based buffer overflo...

Microsoft September 2026 Patch Tuesday: Record 974 Vulnerabilities Addressed72.9

On September 8, 2026, Microsoft released a record-breaking 974 patches for vulnerabilities across its products, including two actively exploited zero-day vulnerabilities: CVE-2026-81963 and CVE-2026-85880. These vulnerabilities allow local attackers to escalate privileges to SYSTEM level, posing sig...