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CVE-2014-8273 is a race-condition vulnerability in chipset firmware write-protection handling for BIOS flash access. The issue occurs between the point at which an interrupt handler detects an attempt to set BIOS write-enable in violation of the lock bit and the point at which the handler clears the write-enable bit again. During this timing window, an attacker can perform unauthorized BIOS writes before protection is reasserted. The weakness is a synchronization failure in security-critical logic protecting firmware flash, enabling bypass of intended BIOS lock enforcement and potentially allowing persistent modification of platform firmware.
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No public exploit code observed for this vulnerability.
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Cross-references every affected SKU, including bundled OEM variants.
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