What’s Vulnerable › Vulnerabilities

CVE-2021-43327

• Severity: medium (CVSS 4.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-12-02 · updated 2026-06-17

Description

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: all versions
• Renesas Rx65N Firmware: all versions

References

• https://www.collshade.fr/articles/reneshack/rx_glitch_article.html
• https://www.collshade.fr/articles/reneshack/rx_glitch_article.html

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