Vulnerability in Mercusys Mercury X18g
CVE-2021-25811
MERCUSYS Mercury X18G 1.0.5 devices allow Denial of service via a crafted value to the POST listen_http_lan parameter. Upon subsequent device restarts after this vulnerability is exploted the device will not be able to access the webserver unless the listen_http_lan parameter to uhttpd.json is manually fixed.
EPSS: 0.016 (73.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Mercusys Mercury_x18g
- Mercusys Mercury_x18g_firmware — versions 1.0.5
- N/a — versions n/a
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (Product, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (x_refsource_MISC, Broken Link)
Frequently asked questions
- What is CVE-2021-25811?
- CVE-2021-25811 is a high-severity vulnerability in Mercusys Mercury X18g. CVSS score: 7.5/10. Published 2021-04-29.
- How severe is CVE-2021-25811?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-25811 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.