CISA adds Cisco SD-WAN Manager flaw to KEV catalog
On September 30, 2026, CISA added CVE-2026-76504, a hexadecimal encoding flaw in Cisco Catalyst SD-WAN Manager, to its Known Exploited Vulnerabilities catalog based on evidence of active exploitation.
Source: CISA adiciona vulnerabilidade explorada conhecida ao catálogo (cisa.gov). Text prepared with AI from this source.
What happened and what to do
In its September 30, 2026 advisory, CISA said it added CVE-2026-76504—a hexadecimal encoding vulnerability in Cisco Catalyst SD-WAN Manager—to the Known Exploited Vulnerabilities (KEV) catalog after finding evidence of active exploitation. Directive BOD 26-04 requires covered federal agencies to prioritize remediation of KEV-listed flaws on publicly exposed assets where exploitation could grant full control of the asset; CISA encourages all organizations to use risk-based vulnerability management.
A company can respond by identifying instances of the product and their exposure, prioritizing updates, and checking for signs of compromise before and after remediation. An integrated process for asset inventory, security advisory monitoring, risk triage, and evidence tracking can help coordinate these actions and track open issues.
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