Path Traversal in Mercusys Mercury X18g
CVE-2021-23242
MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ to the UPnP server, as demonstrated by the /../../conf/template/uhttpd.json URI.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.018 (77.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- Mercusys Mercury X18g
- Mercusys Mercury X18g Firmware — versions 1.0.5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.mercusys.com/en/ (Vendor Advisory)
- www.mercurycom.com.cn/product-521-1.html (Product, Vendor Advisory)
- github.com/BATTZION/MY_REQUEST/blob/master/Mercury Router Upnp Server Directory… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-23242?
- CVE-2021-23242 is a medium-severity vulnerability in Mercusys Mercury X18g, classified under Path Traversal. CVSS score: 5.3/10. Published 2021-01-07.
- How severe is CVE-2021-23242?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2021-23242 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.