CVE-2026-6484
Lack of verified boot to certain FV may cause arbitrary code execution
Description
In an UEFI, Lack of verified boot to certain FV may cause arbitrary code execution.
INFO
Published Date :
Aug. 12, 2026, 1:17 a.m.
Last Modified :
Aug. 12, 2026, 1:17 a.m.
Remotely Exploit :
No
Source :
8338d8cb-57f7-4252-abc0-96fd13e98d21
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 8338d8cb-57f7-4252-abc0-96fd13e98d21 | ||||
| CVSS 3.1 | HIGH | MITRE-CVE |
Solution
- Verify UEFI secure boot configuration.
- Apply firmware updates from vendor.
- Implement integrity checks for firmware.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-6484.
| URL | Resource |
|---|---|
| https://www.insyde.com/security-pledge/sa-2026003/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-6484 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-6484
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-6484 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-6484 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 8338d8cb-57f7-4252-abc0-96fd13e98d21
Aug. 12, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Insyde Software', 'product': 'InsydeH2O', 'versions': [{'status': 'unknown', 'version': 'See in the Solution'}], 'platforms': ['x86'], 'defaultStatus': 'unknown'}] Added Description In an UEFI, Lack of verified boot to certain FV may cause arbitrary code execution. Added CVSS V3.1 AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H Added CWE CWE-1277 Added Reference https://www.insyde.com/security-pledge/sa-2026003/