CVE-2018-5266
CWE-200Published: January 8, 2018· Updated: Jun 17, 2026
Official Description
Cobham Sea Tel 121 build 222701 devices allow remote attackers to obtain potentially sensitive information about valid usernames by reading the loginName lines at the js/userLogin.js URI. NOTE: default passwords for the standard usernames are listed in the product's documentation: Dealer with password seatel3, SysAdmin with password seatel2, and User with password seatel1.
Technical Analysis
CVE-2018-5266 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.
From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (CWE-200)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2018-5266 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts