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CVE-2020-27211
Nordic Semiconductor nRF52840 devices through 2020-10-19 have improper protection against physical side channels. The flash read-out…
Medium5.7EPSS 0.30%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
Nordic Semiconductor nRF52840 devices through 2020-10-19 have improper protection against physical side channels. The flash read-out protection (APPROTECT) can be bypassed by injecting a fault during the boot phase.
Timeline
ID reserved
By mitre
- 7 months later
· 7 months later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.7 | CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.30% · top 78% of all CVEs (7 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.7.
Weakness
Affected products
n/a
- affected n/a
References (5)
- https://www.aisec.fraunhofer.de/en/FirmwareProtection.html (opens in a new tab)x_refsource_MISCx_transferred
- https://eprint.iacr.org/2021/640 (opens in a new tab)x_refsource_MISCx_transferred
- https://limitedresults.com/2020/06/nrf52-debug-resurrection-approtect-bypass/ (opens in a new tab)x_refsource_MISCx_transferred
- https://infocenter.nordicsemi.com/pdf/in_133_v1.0.pdf (opens in a new tab)x_refsource_MISCx_transferred
- https://www.aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.html (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-27211)Record last updated .