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CVE-2021-20649
ELECOM WRC-300FEBK-S contains an improper certificate validation vulnerability. Via a man-in-the-middle attack, an attacker may alter the…
Medium4.8EPSS 0.34%
- Published
- Updated
- Reserved
- Assigned by
- jpcert
Description
ELECOM WRC-300FEBK-S contains an improper certificate validation vulnerability. Via a man-in-the-middle attack, an attacker may alter the communication response. As a result, an arbitrary OS command may be executed on the affected device.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium4.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.34% · top 73% of all CVEs (7 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.8.
Weakness
- Improper certificate validation
- CWE-295 (opens in a new tab)All about CWE-295 and its CVEs
Affected products
ELECOM CO.,LTD. · WRC-300FEBK-S
- affected WRC-300FEBK-S
References (2)
- https://www.elecom.co.jp/news/security/20210126-01/ (opens in a new tab)x_refsource_MISCx_transferred
- https://jvn.jp/en/jp/JVN47580234/index.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-2021-20649)Record last updated .