CVE-2018-4063
CVSS v3
8.8
HIGH
EPSS Score
0.8 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Description
An exploitable remote code execution vulnerability exists in the upload.cgi functionality of Sierra Wireless AirLink ES450 FW 4.9.3. A specially crafted HTTP request can upload a file, resulting in executable code being uploaded, and routable, to the webserver. An attacker can make an authenticated HTTP request to trigger this vulnerability.
CISA Known Exploited Vulnerability
- Date Added
- 2025-12-12
- Patch Due Date
- 2026-01-02
- Ransomware Use
- Unknown
Technical details
- Published
- 2019-05-06
Frequently asked questions
What is CVE-2018-4063?
An exploitable remote code execution vulnerability exists in the upload.cgi functionality of Sierra Wireless AirLink ES450 FW 4.9.3. A specially crafted HTTP request can upload a file, resulting in executable code being uploaded, and routable, to the webserver. An attacker can make an authenticated HTTP request to trigger this vulnerability.
Is CVE-2018-4063 actively exploited?
Yes. CVE-2018-4063 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-01-02.
What is the CVSS score for CVE-2018-4063?
CVE-2018-4063 has a CVSS v3 base score of 8.8 (HIGH severity).
Is CVE-2018-4063 affecting your environment?
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