MEDIUM
CVE-2021-20644
CWE-74Published: February 12, 2021· Updated: Jun 17, 2026
6.1
CVSS v3.1
Official Description
ELECOM WRC-1467GHBK-A allows arbitrary scripts to be executed on the user's web browser by displaying a specially crafted SSID on the web setup page.
Technical Analysis
CVE-2021-20644 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeChanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Affected Vendors & Products
elecom2 product(s)
wrc-1467ghbk-a firmwarewrc-1467ghbk-a
Source: NVD CPE · 2 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (4)
→
https://jvn.jp/en/jp/JVN47580234/index.htmlThird Party Advisory
→
https://www.elecom.co.jp/news/security/20210126-01/Vendor Advisory
→
https://jvn.jp/en/jp/JVN47580234/index.htmlThird Party Advisory
→
https://www.elecom.co.jp/news/security/20210126-01/Vendor Advisory
Quick Facts
CVE IDCVE-2021-20644
CVSS Score6.1 / 10
SeverityMEDIUM
WeaknessCWE-74
CISA KEVNo
Affected1 vendor(s)
PublishedFeb 12, 2021
Related CVEs (CWE-74)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-20644 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.