CVE-2021-43327 json
An issue was discovered on Renesas RX65 and RX65N devices.
published 2021-12-02 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-30265
- cvss
- 4.6
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 27%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- collshade.fr https://www.collshade.fr/articles/reneshack/rx_glitch_article.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 4.6 | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 2.1 | AV:L/AC:L/Au:N/C:P/I:N/A:N |
References
-
collshade.fr
/articles/reneshack/rx_glitch_article.html
exploit, third-party-advisory
Sources
- CVE List CVE-2021-43327
- NVD CVE-2021-43327
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