CVE-2026-54333

Katalog CVE

CVSS 9.8 · Critical EPSS 0,80%

Kerentanan Out-of-bounds Write. Skor CVSS 3.1 9.8 (Critical) menurut github.com.

Deskripsi (NVD)

UEFI Firmware Parser parses BIOS, Intel ME, and UEFI firmware structures including volumes, file systems, and files. Prior to 1.14, MakeTable() in uefi_firmware/compression/Tiano/Decompress.c does not validate that bit-length values read from a crafted Tiano or EFI compressed firmware bitstream remain within the expected range from 0 through 16. The normal CompressedSection.process() to efi_compressor.TianoDecompress() to TianoDecompress() to ReadPTLen() to MakeTable() parsing path can consequently write beyond the stack-allocated Count[17] array and related decode tables. The resulting stack corruption deterministically crashes the parsing process and may permit code execution depending on build and runtime details. This issue is fixed in version 1.14.

Rincian

Terbit di NVD

14 September 2026

Terakhir diubah

30 September 2026

Status NVD

Deferred

CVSS 3.1

9.8 (Critical), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-787: Out-of-bounds Write

EPSS (30 hari)

0,80% peluang dieksploitasi; lebih tinggi dari 55,4% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/theopolis/uefi-firmware-parser/commit/bf3dfaa8a05675bae6ea0cbfa082ddcebfcde23e
• https://github.com/theopolis/uefi-firmware-parser/pull/145
• https://github.com/theopolis/uefi-firmware-parser/releases/tag/v1.14
• https://github.com/theopolis/uefi-firmware-parser/security/advisories/GHSA-2689-5p89-6j3j