Search/CVE-2018-4063
● CVE — High

CVE-2018-4063

VendorsierrawirelessProductaleosDiscoveredMay 6, 2019UpdatedDec 15, 2025

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.

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CVSS v3.1
8.8 HIGH
EPSS
27.3%
probability of exploitation in 30 days
CISA KEV
Listed
confirmed active exploitation
News coverage
1
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Aug 16, 2026 → Oct 22, 2026
▼ 0.25pp
27.5% → 27.3% over 3 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
ScopeUNCHANGED
ConfidentialityHIGH
IntegrityHIGH
AvailabilityHIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Connections
3 relationships
Timeline
disclosure → media coverage
May 6, 2019
Disclosure — published as a CVE record. · last revised by NVD Dec 15, 2025
Dec 13, 2025
thehackernews.com reports: CISA Adds Actively Exploited Sierra Wireless Router Flaw Enabling RCE Attacks