CVE-2021-23241
MEDIUM
5.3
CVSS Score
Published: January 7, 2021 at 08:19 PM UTC
Updated: June 17, 2026 at 03:38 AM UTC
2 products affected across 1 vendorMercury X18G FirmwareMercury X18G
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Severity
MEDIUM5.3
Exploit prediction
EPSS 13%
Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Mercury X18G· Mercusysdevice
80%All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (3)
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://github.com/BATTZION/MY_REQUEST/blob/master/Mercury%20Router%20Web%20Server%20Directory%20Traversal.mdx_refsource_MISCProductVendor Advisory
Source: [email protected]
https://www.mercurycom.com.cn/product-521-1.htmlCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-22
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