Improper certificate validation in ELECOM CO.,LTD. WRC-300FEBK-S
Priority LOW 22CWE-295Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-295.
Summary
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.
Why it matters now
EPSS 0.00335 27th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ELECOM CO.,LTD. | WRC-300FEBK-S | WRC-300FEBK-S | — | No fix listed | CNA |
- WRC-300FEBK-S VendorELECOM CO.,LTD. Affected WRC-300FEBK-S Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:elecom:wrc-300febk-s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | ELECOM CO.,LTD. |
| cpe:2.3:h:elecom:wrc-300febk-s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | ELECOM CO.,LTD. |
- cpe:2.3:o:elecom:wrc-300febk-s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·ELECOM CO.,LTD.
- cpe:2.3:h:elecom:wrc-300febk-s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·ELECOM CO.,LTD.
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-20649
- 2026-10-03 Alias added: GHSA-5244-5vqh-qwmc
References
More ELECOM CO.,LTD. Wrc-300febk-s Firmware vulnerabilities
- TI-2021-03875 OS command injection in ELECOM CO.,LTD. WRC-300FEBK-S CVSS 3.1MEDIUM 6.8
- TI-2021-03874 Cross-site request forgery in ELECOM CO.,LTD. WRC-300FEBK-S CVSS 3.1MEDIUM 6.5
Sources
- CVE-2021-20649 · CVE Program
- CVE-2021-20649 · NVD
- FIRST EPSS
- GHSA-5244-5vqh-qwmc · GitHub Advisory Database · CC BY 4.0
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