Signal is active with 2 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
UEFI Firmware Parser parses BIOS, Intel ME, and UEFI firmware structures including volumes, file systems, and files. Prior to 1.14, ReadCLen() in uefi_firmware/compression/Tiano/Decompress.c reads Number from GetBits(Sd, CBIT) with CBIT = 9 and can obtain 511 entries for the 510-element Sd->mCLen heap array because its loop does not enforce Index < NC. The CharC == 2 run-length path can additionally request up to 531 zero writes through Sd->mCLen[Index++] = 0. The normal CompressedSection.process() to efi_compressor.TianoDecompress() to TianoDecompress() to DecodeC() to ReadCLen() parsing path therefore permits crafted Tiano or EFI compressed firmware to corrupt heap memory, deterministically crash the parsing process, and potentially execute code depending on build and runtime details. This issue is fixed in version 1.14.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
Update: CVE-2026-54334: Kritische Schwachstelle im UEFI Firmware Parser vor Version 1.14 https://cybersecurity-news.de/cve-2026-54334-uefi-firmware-parser-1-14
Post summary
The text announces a critical vulnerability in the UEFI firmware parser for versions before 1.14 and links to a news article. It provides no PoC, exploit code, active exploitation claim, or explicit remediation guidance.
#schwachstellen CVE-2026-54334: Kritische Schwachstelle im UEFI Firmware Parser vor Version 1.14 #bios #cve202654334 #intelme #uefi #uefifirmwareparser https://cybersecurity-news.de/cve-2026-54334-uefi-firmware-parser-1-14
Post summary
The tweet discloses CVE‑2026‑54334, a critical vulnerability in the UEFI Firmware Parser affecting versions before 1.14.