HPE warns of critical unauthenticated flaw in ArubaOS PAPI service (CVE-2026-79857)

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HPE has disclosed CVE-2026-79857, a critical command-injection vulnerability in the PAPI access point management service of ArubaOS AOS-8. The flaw, which HPE rates 9.8 on CVSS 3.1, can be triggered by specially crafted UDP packets without credentials or user interaction. Successful exploitation could enable remote code execution with privileged access, potentially affecting configuration and wireless service. HPE reported no known public exploit at release, and the vendor has advised upgrading affected AOS-8.13 and AOS-8.10 systems to fixed versions. Administrators are also urged to review network reachability to UDP port 8211, not just HTTPS management access.

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