Researchers at Binarly found six flaws in U-Boot, the open-source bootloader inside routers, IoT devices, industrial systems, and the management chips of data-center servers. All six are triggered while U-Boot is still reading an untrusted firmware image, before it verifies the signature, so an attacker who supplies a malicious image can act before the trust check runs. Two of the flaws can lead to arbitrary code execution at boot, undermining the whole chain of trust, while the other four crash the device. The vulnerable code dates back to 2013, affecting many releases and vendor forks. Exploiting them does not always need physical access: a compromised management interface could push a malicious image.
Researchers at runZero disclosed seven vulnerabilities in FatFs, a tiny filesystem library that lets devices read FAT and exFAT media like USB drives and SD cards and that is bundled into the firmware of countless embedded and industrial products. The most serious, CVE-2026-6682, is an integer overflow when mounting a FAT32 volume that can lead to memory corruption and code execution, and several bugs are reachable through firmware update flows, not just physical media. The hard part is patching: FatFs is maintained by a single developer who did not respond to the researchers, so most of the memory-corruption flaws have no upstream fix and downstream vendors may never learn they are affected.
TrustStrike Labs