CISA orders feds to patch exploited Citrix flaws by Wednesday
Over the weekend, the Cybersecurity and Infrastructure Security Agency (CISA) instructed U.S. government agencies to protect their systems from attacks that exploit two critical Citrix NetScaler vulnerabilities.
Days after national cybersecurity agencies, IT suppliers, and security teams started privately reaching out to Citrix customers and recommending they shut down their NetScaler appliances, Citrix issued security updates to fix the flaws (tracked as CVE-2026-88771 and CVE-2026-88772).
For example, the Dutch National Cyber Security Center (NCSC-NL) reportedly alerted organizations in the Netherlands to two critical NetScaler zero-days lacking CVE IDs, which let threat actors inject shellcode straight into memory.
On Sunday, Citrix verified that the two vulnerabilities were b...










