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CVEs

CVE-2026-88779

exploited in the wild☆ pin
CVSS
8.7
Reports
14
First seen
Oct 4, 2026
Last seen
Oct 13, 2026
Affected product

Citrix NetScaler

Associated actors

CyberXero ×1DataSuckers ×1KillSec ×1RatHat operators ×1ShinyHunters ×1Star Blizzard ×1Storm-3069 ×1UAC-0099 ×1Xuanye ×1

Recent reports

High

Microsoft October 2026 Patch Tuesday fixes 1,411 flaws, including 3 zero-days

Bleeping ComputerHigh

12th October – Threat Intelligence Report

Check Point ResearchHigh

Citrix warns admins to patch new NetScaler RCE flaw immediately

Bleeping ComputerMedium

Threat Source: AI-Analysis Evasion and Weekly Security Headlines

Cisco TalosHigh

Citrix NetScaler Vulnerability CVE-2026-88779 Exploited in the Wild

GovCERT.HKHigh

Citrix discloses third actively exploited NetScaler zero-day in less than a week

CyberScoopHigh

US, Australia warn of latest Citrix NetScaler vulnerability after advisory

The Record (Recorded Future News)High

Weekly Recap: NetScaler and FortiMail Zero-Days, KillSec Arrests, Spectre v2 Variant

The Hacker NewsCritical

Citrix NetScaler ADC and Gateway vulnerability (CVE-2026-88779) exploited in the wild

Canadian Centre AlertsHigh

CVE-2026-88779: NetScaler SAML Memory Overflow Zero-Day Under Active Exploitation

The Hacker NewsHigh

Citrix NetScaler ADC/Gateway Denial of Service Vulnerability

HKCERTHigh

Citrix NetScaler CVE-2026-88779 memory overflow in active exploitation

Sophos NewsHigh

Citrix patches NetScaler SAML zero-day exploited in attacks

Bleeping ComputerHigh

CISA Adds CVE-2026-88779 Citrix NetScaler Buffer Overflow to Known Exploited Vulnerabilities Catalog

CISA Advisories

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