CVE-2025-7028: SMM Arbitrary Memory Access via Flash Handler with Unchecked FuncBlock Pointer
GIGABYTE · UEFI-SmiFlash
Affected: GIGABYTE UEFI-SmiFlash · 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 0x20) allows a local attacker to supply a crafted pointer (FuncBlock) through RBX and RCX register values. This pointer is passed unchecked into multiple flash management functions (ReadFlash, WriteFlash, EraseFlash, and GetFlashInfo) that dereference both the structure and its nested members, such as BufAddr. This enables arbitrary read/write access to System Management RAM (SMRAM), allowing an attacker to corrupt firmware memory, exfiltrate SMRAM content via flash, or install persistent implants.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- GIGABYTE · UEFI-SmiFlash1.0.0
On the Atlas
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CoverageNo articles yet
No CyberSIXT article names CVE-2025-7028 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.