CVE-2026-76676

CVE-2026-76676 describes buffer overflow vulnerabilities in the underlying operating system of HPE Aruba EdgeConnect SD-WAN Gateways. An unauthenticated attacker positioned on an adjacent network segment could trigger the flaw with crafted input, but only if certain preconditions outside the attacker's control are met, which limits the practical attack surface. Successful exploitation allows execution of arbitrary code as a privileged user on the gateway's OS, resulting in complete system compromise of the appliance. Affected products are EdgeConnect SD-WAN Gateway appliances (specific versions were not stated in the data, so consult the HPE advisory). The flaw is not in the CISA KEV catalog, no public PoC is known, and no exploitation has been observed.

What to do: Review the HPE Aruba security advisory for CVE-2026-76676 and upgrade all EdgeConnect SD-WAN Gateways (via Orchestrator firmware management) to the fixed versions it specifies. Restrict which devices and users can reach gateway-facing network segments (e.g., enforce 802.1X/edge ACLs and isolate branch LANs from untrusted peers) since the vector requires an adjacent attacker. Log and investigate unexpected gateway process crashes or anomalous privileged process activity, which would be indicative of failed or attempted exploitation.