CVE-2021-25811 is a high-severity denial-of-service vulnerability affecting MERCUSYS Mercury X18G 1.0.5 devices. An unauthenticated attacker can exploit this by sending a crafted value to the POST listen_http_lan parameter, rendering the device's web server inaccessible after a restart. The CVSS score is 7.5, indicating a network-exploitable vulnerability with low attack complexity and high impact on availability. There is currently no public exploit code, active exploitation, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
1.0.5CPE matchmatch criteria | cpe:2.3:o:mercusys:mercury_x18g_firmware:1.0.5:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.