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Fencer Vulns
critical 9.8

CVE-2017-3197 json

GIGABYTE BRIX UEFI firmware fails to securely implement BIOS write protection

published 2018-07-09 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-12323

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.6%
EPSS 5.6% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

GIGABYTE BRIX UEFI firmware for the GB-BSi7H-6500 (version F6) and GB-BXi7-5775 (version F2) platforms does not securely implement BIOSWE, BLE, SMM_BWP, and PRx features. As a result, the BIOS is not protected from arbitrary write access and may permit modifications to the SPI flash.

Exploit prediction

5.57% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/CylanceVulnResearch/disclosures/blob/master/CLVA-2017-01-001.md referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/CylanceVulnResearch/disclosures/blob/master/CLVA-2017-01-002.md referenced PoC, tagged "exploit" by a source, unverified
  • cylance.com https://www.cylance.com/en_us/blog/gigabyte-brix-systems-vulnerabilities.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • GIGABYTE GB-BSi7H-6500
  • GIGABYTE GB-BXi7-5775

Classification

Weakness
  • CWE-693 Protection Mechanism Failure
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.