CVE-2021-41613: Openrisc MOR1KX Firmware

Medium severity, CVSS 4.3. EPSS: 0.4% chance of exploitation in the next 30 days.

An issue was discovered in the controller unit of the OpenRISC mor1kx processor. The write logic of Exception Effective Address Register (EEAR) is not implemented correctly. User programs from authorized privilege levels will be unable to write to EEAR.

Affected products

• Openrisc MOR1KX Firmware: before 5.1 (fixed in 5.1)

Published 2023-04-18. Last modified 2026-06-17.