CVE-2025-7027: SMM Arbitrary Write via Dual-Controlled Pointers in CommandRcx1
GIGABYTE · UEFI-GenericComponentSmmEntry
Affected: GIGABYTE UEFI-GenericComponentSmmEntry · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 14% of scored CVEs
DescriptionCVE.org
A vulnerability in the Software SMI handler (SwSmiInputValue 0xB2) allows a local attacker to control both the read and write addresses used by the CommandRcx1 function. The write target is derived from an unvalidated UEFI NVRAM variable (SetupXtuBufferAddress), while the write content is read from an attacker-controlled pointer based on the RBX register. This dual-pointer dereference enables arbitrary memory writes within System Management RAM (SMRAM), leading to potential SMM privilege escalation and firmware compromise.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- GIGABYTE · UEFI-GenericComponentSmmEntry1.0.0
On the Atlas
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CoverageNo articles yet
No CyberSIXT article names CVE-2025-7027 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.