CVE-2018-40638.8HighCWE-434

CVE-2018-4063: Sierra Wireless vulnerability

Sierra Wireless

Affected: Sierra Wireless · Exploitation: in CISA KEV since 12 Dec 2025

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

ExploitationIn CISA KEV

In CISA KEVCISA KEV catalogue12 Dec 2025
Exploited (reported): not seen
Scanning observed: not seen
Proof of concept public: not seen
Not established: not seen

27.3%probability of exploitation in the next 30 days

98th percentile

050100

Higher than 98% of scored CVEs

8.8HighCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

Sierra WirelessSierra Wireless AirLink ES450 FW 4.9.3

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalogue.
CISA KEV: Listed since 12 Dec 2025 · catalogue entry
Public check: No public nuclei template
Weakness: Unrestricted File Upload · File and Path Handling
Vendor: Sierra Wireless
Published: May 2019
Band: Exploited in the wild, May 2019

What changed

12 Dec 2025
CISA added it to the KEV catalogue CISA

CoverageNo articles yet

No CyberSIXT article names CVE-2018-4063 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.