CVE-2022-36558
CWE-798Published: August 29, 2022· Updated: Jun 17, 2026
Official Description
Seiko SkyBridge MB-A100/A110 v4.2.0 and below implements a hard-coded passcode for the root account. Attackers are able to access the passcord via the file /etc/ciel.cfg.
Risk Analysis
Seiko SkyBridge MB-A100/A110 firmware versions 4.2.0 and below contain a hard-coded root password stored in a configuration file. This allows attackers to gain full administrative access to the device remotely.
No public exploit is known, and the vulnerability is not in the KEV catalog. The flaw is remotely exploitable with low attack complexity.
Update the firmware to a version beyond 4.2.0 and ensure that default credentials are changed immediately.
Technical Analysis
CVE-2022-36558 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), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (4)
Quick Facts
Related CVEs (CWE-798)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2022-36558 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts