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CVE-2025-20037 is a time-of-check time-of-use (TOCTOU) race condition in some Intel Converged Security and Management Engine (CSME) firmware implementations. The flaw arises when the firmware checks or validates a resource and subsequently uses that resource after its state may have changed, creating a race window that can be won by a local privileged attacker. Intel states the issue may allow a privileged user to potentially enable escalation of privilege via local access. Publicly available material indicates the issue affects CSME firmware versions prior to 16.1.38.2676 and prior to 14.1.77.2497. Because CSME operates with extensive system privileges and underpins security and management functions on Intel-based desktops, laptops, and servers, successful exploitation could undermine deeper platform security boundaries. Public sources provided here do not identify the exact vulnerable function or code path.
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A vulnerability referenced by Intel Security Advisory INTEL-SA-01280 affecting HPE Cray XD670 servers using certain Intel processors; described as locally exploitable and potentially enabling escalation of privilege and/or information disclosure.
A TOCTOU race condition in Intel CSME firmware that can allow a privileged local attacker to escalate privileges or bypass security controls on affected Intel-based systems.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.