CVE-2021-43327

MEDIUM
Published Dec 2, 20214y ago · Modified Jun 17, 20262w ago
4.6 CVSS 3.1
Medium
Find Similar
Published Dec 2, 2021 4y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
4.6
Exploitability
0.9
Impact
3.6
Vector string
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Physical
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
No Patch Available

Affected Products 4

VendorProductVersionRange
renesasrx65n_firmware*any
renesasrx65n*any
renesasrx65_firmware*any
renesasrx65*any

References 1

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.