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Cybersecurity

Critical UEFI Firmware Flaw Allows Attackers to Execute Code Before Windows or Linux Boots

CyberPress ·

A critical vulnerability in EDK II’s PXE network boot implementation could let unauthenticated attackers run arbitrary code before Windows or Linux loads. Tracked as CVE-2026-97631, the flaw affects ICMP error handling in the NetworkPkg PXE Base Code driver during IPv4 and IPv6 network boot. The advisory identifies the EDK II master as affected as of […] The post Critical UEFI Firmware Flaw Allows Attackers to Execute Code Before Windows or Linux Boots appeared first on Cyber Security News .

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