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Citrix patches actively exploited NetScaler zero-days after a weekend of unofficial warnings

ID: d249a497-aeb9-5022-86b3-423088d6af9b

STIX ID: report--d249a497-aeb9-5022-86b3-423088d6af9b

Feed Name: CyberScoop

Threat Score
90/100

Date Published: 2026-09-29

Date Updated: 2026-09-29

Author: Matt Kapko

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Citrix NetScaler zero-day vulnerabilities (CVE-2026-88771 and CVE-2026-88772) were actively exploited in the wild, enabling remote code execution; patches were released after public confirmation and a proof-of-concept appeared, with reports of over 50,000 potentially exposed devices and CISA adding the CVEs to its known exploited vulnerabilities catalog.

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