Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2018-4063

CVE-2018-4063HIGH

n/a Sierra Wireless — Sierra Wireless AirLink ALEOS

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   N  U  H  H  H    8.8   .2726   98.0   YES

AFFECTED
  Product          Versions                                  Fixed
  Sierra Wireless  Sierra Wireless AirLink ES450 FW 4.9.3 –  —

TIMELINE
  Jan 2   Reserved by talos
  May 6   Published (CNA: talos)
  Dec 12  Added to CISA KEV, remediation due 2026-01-02

CWE-434 · CNA: talos · CVSS v3.1 · 6 references · KEV due January 2, 2026

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
January 2, 2018	Reserved	Reserved by talos
May 6, 2019	Published	Published (CNA: talos)
December 12, 2025	KEV ADDED	Added to CISA KEV, remediation due 2026-01-02

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	Sierra Wireless	—	Sierra Wireless AirLink ES450 FW 4.9.3	—

Weaknesses

CWE-434

References (6)

http://packetstormsecurity.com/files/152648/Sierra-Wireless-AirLink-ES450-ACEManager-upload.cgi-Remote-Code-Execution.html [x_refsource_MISC]
http://www.securityfocus.com/bid/108147 [vdb-entry, x_refsource_BID]
https://ics-cert.us-cert.gov/advisories/ICSA-19-122-03 [x_refsource_MISC]
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0748 [x_refsource_MISC]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-4063 [government-resource]
https://www.forescout.com/blog/ot-network-security-threats-industrial-routers-under-attack/ [third-party-advisory]

Authoritative record: CVE-2018-4063 at cve.org

Weaknesses: CWE-434

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2018-4063 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.