CVE-2021-43327
MEDIUMCVSS 4.6/10EPSS 0.33%
Last modified
CVE-2021-43327 is a medium-severity vulnerability rated 4.6/10 on the CVSS scale. 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. EPSS estimates a 0.33% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Renesas | Rx65n Firmware | All versions |
| Renesas | Rx65 Firmware | All versions |
References
- https://www.collshade.fr/articles/reneshack/rx_glitch_article.htmlExploit, Third Party Advisory
- https://www.collshade.fr/articles/reneshack/rx_glitch_article.htmlExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-43327?
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.
How severe is CVE-2021-43327?
CVE-2021-43327 has a CVSS score of 4.6/10 (MEDIUM severity). The EPSS model estimates a 0.33% probability of exploitation in the next 30 days.
How do I fix CVE-2021-43327?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-43327?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST