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🚨 BREAKING: CRITICAL 9.5/10 VULNERABILITY THREATENS SERVERS WORLDWIDE. HACKERS COULD EXECUTE CODE BEFORE THE OPERATING SYSTEM EVEN LOADS. Security researchers have uncovered a 16-year-old firmware vulnerability in technology used across the global server and data center ecosystem. CVE-2026-97631 affects TianoCore EDK II, a foundational component used by major UEFI firmware vendors. And the implications are serious. 🔴 Here's what we know: ➜ Pre-boot code execution: Attackers could execute malicious code at Ring 0, the CPU's highest privilege level, before operating system security controls are active. ➜ Widespread exposure: EDK II code is used extensively by firmware vendors including AMI, Insyde, and Phoenix, potentially exposing numerous enterprise servers. ➜ Security bypass potential: Successful exploitation could undermine the boot chain of trust and potentially enable persistent malware or compromise sensitive information. ➜ 16 YEARS UNDISCOVERED: The underlying buffer overflow has existed for approximately 16 years. ➜ Disclosure went wrong: Researchers from Anthropic and Google discovered the vulnerability, but a publicly released code fix exposed the issue months before its planned coordinated disclosure. ⚠️ THE BIG PROBLEM: A source-code fix has been merged, but affected servers still require firmware updates from their manufacturers. Distributing those updates across enterprise infrastructure could take considerable time. Important: Exploitation requires vulnerable firmware, PXE network boot, network access during the boot process, and target-specific knowledge. This is not an unrestricted remote exploit against every server. Organizations should immediately review their firmware exposure, disable unnecessary network boot functionality, and check for vendor updates. 🔐 Lucid Security is offering FREE initial security reviews to help businesses identify potential vulnerabilities and reduce their attack surface. 🌐 lucidsecurity.si CVE-2026-97631 | CVSS 9.5 CRITICAL Source: Ars Technica / TianoCore Security Advisory