CVE-2021-23147 json
Netgear Nighthawk R6700 version 1.0.4.120 does not have sufficient protections for the UART console.
published 2021-12-30 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-10261
- cvss
- 6.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 31%
- public exploits
- 0
- none known
Summary
Netgear Nighthawk R6700 version 1.0.4.120 does not have sufficient protections for the UART console. A malicious actor with physical access to the device is able to connect to the UART port via a serial connection and execute commands as the root user without authentication.
Exploit prediction
0.38% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.8 | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
Affected products
- n/a Netgear Nighthawk R6700
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
tenable.com
/security/research/tra-2021-57
third-party-advisory
Sources
- CVE List CVE-2021-23147
- NVD CVE-2021-23147
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