CVE-2021-20856
Severity Score
5.4
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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.
Una vulnerabilidad de tipo cross-site scripting en los routers LAN de ELECOM (firmware WRH-733GBK versiones v1.02.9 y anteriores y firmware WRH-733GWH versiones v1.02.9 y anteriores) permite a un atacante remoto autenticado inyectar un script arbitrario por vectores no especificados
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2020-12-17 CVE Reserved
- 2021-12-01 CVE Published
- 2024-08-03 CVE Updated
- 2024-12-17 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC
References (2)
| URL | Tag | Source |
|---|---|---|
| https://jvn.jp/en/jp/JVN88993473/index.html | Third Party Advisory |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://www.elecom.co.jp/news/security/20211130-01 | 2021-12-02 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Elecom Search vendor "Elecom" | Wrh-733gbk Firmware Search vendor "Elecom" for product "Wrh-733gbk Firmware" | <= 1.02.9 Search vendor "Elecom" for product "Wrh-733gbk Firmware" and version " <= 1.02.9" | - |
Affected
| in | Elecom Search vendor "Elecom" | Wrh-733gbk Search vendor "Elecom" for product "Wrh-733gbk" | - | - |
Safe
|
| Elecom Search vendor "Elecom" | Wrh-733gwh Firmware Search vendor "Elecom" for product "Wrh-733gwh Firmware" | <= 1.02.9 Search vendor "Elecom" for product "Wrh-733gwh Firmware" and version " <= 1.02.9" | - |
Affected
| in | Elecom Search vendor "Elecom" | Wrh-733gwh Search vendor "Elecom" for product "Wrh-733gwh" | - | - |
Safe
|