Medium severity · published Dec 1, 2021
CVE-2021-20855
Cross-site scripting vulnerability in ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior) allows a remote authenticated attacker…
5.4
CVSS
0.6%
EPSS
No
On KEV
Description
Cross-site scripting vulnerability in ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior) allows a remote authenticated attacker to inject an arbitrary script via unspecified vectors.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WF
Wrh-733gbk Firmware · Elecom
through 1.02.9 · source: NVD
WF
Wrh-733gwh Firmware · Elecom
through 1.02.9 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20855
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-20855
Third Party Advisory
https://jvn.jp/en/jp/JVN88993473/index.html
Vendor Advisory
https://www.elecom.co.jp/news/security/20211130-01/
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