CVE-2026-34963 Detail
Received
This CVE record has recently been published to the CVE List and has been included within the NVD dataset. Descriptionbarebox version prior to 2026.04.0 contains multiple memory-safety vulnerabilities in the EFI PE loader in efi/loader/pe.c where integer overflow in virtual image size computation using 32-bit arithmetic on section VirtualAddress and size values allows undersized heap allocation, and PE section loading logic fails to validate that PointerToRawData plus copied size remains within the PE file buffer. An attacker can supply a malicious EFI PE binary via TFTP, USB, SD card, or network boot to trigger heap buffer overflow or out-of-bounds read from heap memory, potentially achieving code execution in bootloader context. Metrics
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Weakness Enumeration
Quick InfoCVE Dictionary Entry:CVE-2026-34963 NVD Published Date: 05/11/2026 NVD Last Modified: 05/11/2026 Source: VulnCheck |
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