Page generated: 09 Nov 2026, 13:17 UTC
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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 ma…

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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.
CVSS 8.8 (HIGH) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.5/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 8.8: +1.32
  • Fresh EPSS: 27.26%: +0.14

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 5 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

Recorded Future
Press · 13 Jan 2026, 08:00 · December 2025 CVE Landscape: 22 Critical Vulnerabilities Mark 120% Surge, React2Shell Dominates Threat Activity - Recorded Future
Cyber Daily
Press · 15 Dec 2025, 08:00 · CISA warns of active exploitation of Sierra router and Google Chrome Mac vulnerabilities - Cyber Daily
The Hacker News
Press · 13 Dec 2025, 08:00 · CISA Adds Actively Exploited Sierra Wireless Router Flaw Enabling RCE Attacks - The Hacker News
Industrial Cyber
Press · 12 Dec 2025, 08:00 · Forescout reveals industrial routers become key targets in OT network attacks, as Chaya_005 cluster long active - Industrial Cyber
Cisco Talos Blog
Press · 25 Apr 2019, 07:00 · Vulnerability Spotlight: Multiple vulnerabilities in Sierra Wireless AirLink ES450 - Cisco Talos Blog

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.5 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

0

Public exploit entries / repo candidates

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 8.8; EPSS 27.3%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, low privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:58:00.649680+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
25 Apr 2019, 07:00
Published
06 May 2019, 18:43
Added to the CISA KEV catalog
12 Dec 2025, 00:00
Latest press mention
13 Jan 2026, 08:00
Score calculated
05 Nov 2026, 13:58