CVE-2021-43327: Renesas RX65 Firmware

Medium severity, CVSS 4.6. EPSS: 0.3% chance of exploitation in the next 30 days.

An issue was discovered on Renesas RX65 and RX65N devices. With a VCC glitch, an attacker can extract the security ID key from the device. Then, the protected firmware can be extracted.

Affected products

• Renesas RX65 Firmware: affected versions not specified
• Renesas RX65N Firmware: affected versions not specified

Published 2021-12-02. Last modified 2026-06-17.