{"id":"CVE-2021-43327","aliases":["EUVD-2021-30265","GHSA-g528-27f5-rgqv"],"status":"published","title":"An issue was discovered on Renesas RX65 and RX65N devices. With a VCC glitch, an attacker can...","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.","severity":{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.0034,"percentile":0.27602,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-522"],"published":"2021-12-02T20:00:59Z","modified":"2026-06-17T04:10:51Z","products":[{"vendor":"renesas","product":"rx65_firmware"},{"vendor":"renesas","product":"rx65n_firmware"}],"references":[{"url":"https://www.collshade.fr/articles/reneshack/rx_glitch_article.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43327"},{"url":"https://github.com/advisories/GHSA-g528-27f5-rgqv"}],"sources":{"cve":[{"id":"CVE-2021-43327","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.","status":"published","published":"2021-12-02T20:00:59Z","modified":"2024-08-04T03:55:28.49Z","updated_at":"2026-11-02T14:32:56.689433Z"}],"euvd":[{"id":"EUVD-2021-30265","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.","status":"published","published":"2021-12-02T20:00:59Z","modified":"2024-08-04T03:55:28Z","updated_at":"2026-11-03T03:24:14.245608Z"}],"ghsa":[{"id":"GHSA-g528-27f5-rgqv","title":"An issue was discovered on Renesas RX65 and RX65N devices. With a VCC glitch, an attacker can...","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.","status":"published","published":"2021-12-03T00:00:27Z","modified":"2023-08-17T05:01:53Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-522"],"updated_at":"2026-11-02T14:54:45.250925Z"}],"nvd":[{"id":"CVE-2021-43327","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.","status":"published","published":"2021-12-02T20:15:07.973Z","modified":"2026-06-17T04:10:51.433Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"updated_at":"2026-11-02T14:07:01.811115Z"}]}}