CISA adds NetScaler flaw to KEV catalog
On October 4, 2026, CISA added CVE-2026-88779, a Citrix NetScaler flaw, to its KEV catalog following evidence of active exploitation.
Source: CISA adiciona uma vulnerabilidade explorada ao catálogo KEV (cisa.gov). Text prepared with AI from this source.
What happened and what to do
On October 4, 2026, CISA added CVE-2026-88779 to its Known Exploited Vulnerabilities (KEV) catalog based on evidence of active exploitation. The flaw allows operations beyond the bounds of a memory buffer in Citrix NetScaler. Directive BOD 26-04 requires covered federal agencies to prioritize high-risk KEV vulnerabilities on publicly exposed assets and check for possible compromise before applying fixes, according to the directive's expectations. CISA recommends that all organizations prioritize vulnerabilities listed in the KEV catalog.
A company can map NetScaler instances and their internet exposure, cross-check its inventory against KEV, and open risk-based remediation workflows. It can also record evidence and check for signs of compromise before patching, while tracking deadlines and outstanding work in a dashboard. The cited directive applies to covered federal agencies; other organizations can use these practices as a reference.
How the consultancy can help
Wendelmaques can diagnose exposure and vulnerability-management processes, scope inventory, prioritization, and compromise-checking work, and implement the required workflows and dashboards while supporting their operation.
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Send a short description of your NetScaler environment and current patching process to receive a scoped proposal.
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