High severity · published Jul 7, 2021
CVE-2021-20739
WRC-300FEBK, WRC-F300NF, WRC-733FEBK, WRH-300RD, WRH-300BK, WRH-300SV, WRH-300WH, WRH-H300WH, WRH-H300BK, WRH-300BK-S, and WRH-300WH-S all versions allows an unauthenticated…
8.8
CVSS
0.5%
EPSS
No
On KEV
Description
WRC-300FEBK, WRC-F300NF, WRC-733FEBK, WRH-300RD, WRH-300BK, WRH-300SV, WRH-300WH, WRH-H300WH, WRH-H300BK, WRH-300BK-S, and WRH-300WH-S all versions allows an unauthenticated network-adjacent attacker to execute an arbitrary OS command via unspecified vectors.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WF
Wrc-300febk Firmware · Elecom
All versions, or not specified · source: NVD
WF
Wrc-733febk Firmware · Elecom
All versions, or not specified · source: NVD
WF
Wrc-f300nf Firmware · Elecom
All versions, or not specified · source: NVD
WF
Wrh-300bk Firmware · Elecom
All versions, or not specified · source: NVD
WF
Wrh-300bk-s Firmware · Elecom
All versions, or not specified · source: NVD
WF
Wrh-300rd Firmware · Elecom
All versions, or not specified · source: NVD
WF
Wrh-300sv Firmware · Elecom
All versions, or not specified · source: NVD
WF
Wrh-300wh Firmware · Elecom
All versions, or not specified · source: NVD
WF
Wrh-300wh-s Firmware · Elecom
All versions, or not specified · source: NVD
WF
Wrh-h300bk Firmware · Elecom
All versions, or not specified · source: NVD
WF
Wrh-h300wh Firmware · Elecom
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20739
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-20739
Third Party Advisory
https://jvn.jp/en/vu/JVNVU94260088/index.html
Vendor Advisory
https://www.elecom.co.jp/news/security/20210706-01/
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