CVE-2021-23241

moderate-risk
Published 2021-01-07

MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ in conjunction with a loginLess or login.htm URI (for authentication bypass) to the web server, as demonstrated by the /loginLess/../../etc/passwd URI.

Do I need to act?

!
57.9% chance of exploitation in next 30 days
EPSS score — higher than 42% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Mercury X18G Firmware

Affected Vendors

Mercusys

References (6)

Exploit https://github.com/BATTZION/MY_REQUEST/blob/master/Mercury%20Router%20Web%20Serv...
Product https://www.mercurycom.com.cn/product-521-1.html
Vendor Advisory https://www.mercusys.com/en/
Exploit https://github.com/BATTZION/MY_REQUEST/blob/master/Mercury%20Router%20Web%20Serv...
Product https://www.mercurycom.com.cn/product-521-1.html
Vendor Advisory https://www.mercusys.com/en/
44
/ 100
moderate-risk
Severity 21/34 · High
Exploitability 18/34 · Moderate
Exposure 5/34 · Minimal