Out-of-bounds Write Affecting uefi-firmware package, versions [,1.15)
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-PYTHON-UEFIFIRMWARE-16426807
- published6 May 2026
- disclosed16 Apr 2026
- creditOleh Konko
Introduced: 16 Apr 2026
CVE NOT AVAILABLE CWE-787 (opens in a new tab)Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade uefi-firmware to version 1.15 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Write through the MakeTable in the decompression routine when bit-length values from a crafted firmware blob exceed the expected range, leading to stack memory corruption in the Count array and related decode tables. An attacker can achieve a crash in the context of the parsing process by supplying specially crafted input.