# uefi-firmware (PyPI) vulnerabilities

2 known vulnerabilities (2 critical), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: 1.16.0 (Jun 4, 2026): no advisory affects it
- Newest unaffected release: 1.16.0 (Jun 4, 2026), the latest release
- Weekly downloads: 32.2K
- Dependents: 33
- Releases: 11 since 1.1.0 (Dec 28, 2015)
- Registry: https://pypi.org/project/uefi-firmware/
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2026-54334: 1.1.0 to 1.11.0 (1.15.0 is outside it)
- CVE-2026-54333: 1.1.0 to 1.11.0 (1.15.0 is outside it)

## Advisories (2)

### [CVE-2026-54334](https://cve.now/CVE-2026-54334): UEFI Firmware Parser: Heap out-of-bounds write in tiano decompressor \`ReadCLen\`

- Severity: Critical 9.8
- Published: Sep 14, 2026
- Affected: through 1.12.
- Fixed in 1.15.0 (released Jun 4, 2026, 102 days before disclosure), the first release outside every affected range (no listed fixed version clears them all).
- The latest release, 1.16.0, is not affected.

### [CVE-2026-54333](https://cve.now/CVE-2026-54333): UEFI Firmware Parser: Stack out-of-bounds write in tiano decompressor MakeTable

- Severity: Critical 9.8
- Published: Sep 14, 2026
- Affected: through 1.12.
- Fixed in 1.15.0 (released Jun 4, 2026, 102 days before disclosure), the first release outside every affected range (no listed fixed version clears them all).
- The latest release, 1.16.0, is not affected.

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