VulnerabilityModified
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.
HIGH 7.5EPSS 1.63%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.63%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.63% probability · 75th percentile
- CISA KEV
- Not listed
- Affected
- mercusys/mercury x18g firmware
- Source
- cve@mitre.org
References
- https://github.com/pokerfacett/MY_REQUEST/blob/master/Mercury%20Router%20X18g%20v1.0.5%20Denial%20of%20Service.mdBroken Link
- https://www.mercurycom.com.cn/product-521-1.htmlProduct, Vendor Advisory
- https://www.mercusys.com/en/Vendor Advisory
- https://github.com/pokerfacett/MY_REQUEST/blob/master/Mercury%20Router%20X18g%20v1.0.5%20Denial%20of%20Service.mdBroken Link
- https://www.mercurycom.com.cn/product-521-1.htmlProduct, Vendor Advisory
- https://www.mercusys.com/en/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.