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ncsc.gov.uk

ncsc.gov.uk

Evidence-bounded context

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Current clusters

security18 publishers

Citrix patches two NetScaler zero-days that attackers used before any fix existed

Citrix shipped fixes on September 27 for NetScaler flaws CVE-2026-88771 and CVE-2026-88772, both rated 9.5 and exploited on unpatched appliances. Exploitation began before the fix, at a date Citrix has not given, so affected appliances need an intrusion check as well as an upgrade.

Perspective Coverage

17 publishers
Builder
Builder 12%
Operator
Operator 81%
Investor
Investor 7%

Reality

Evidence82
Adoption70
Hype gap+8
Incentives35
Confidence78