CVE-2025-6543

CVE

Threat entity extracted from intelligence sources

Frequency

occurrences

First Seen

September 26, 2026

Last Seen

October 4, 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

Critical Zero-Day Vulnerabilities in Citrix NetScaler Under Active Exploitation80.8

On September 26, 2026, security firm watchTowr reported two unpatched zero-day vulnerabilities in Citrix NetScaler ADC and Gateway appliances, allowing remote code execution (RCE) and actively exploited in the wild. Citrix has confirmed the existence of these vulnerabilities, tracked as CVE-2026-887...

Critical Citrix NetScaler Zero-Day Vulnerabilities Exploited80.0

In late September 2026, two critical zero-day vulnerabilities (CVE-2026-88771 and CVE-2026-88772) in Citrix NetScaler ADC and Gateway were actively exploited, allowing remote code execution. The Cybersecurity and Infrastructure Security Agency (CISA) added these CVEs to its Known Exploited Vulnerabi...