CVE-2018-4063 (GCVE-0-2018-4063)

Vulnerability from cvelistv5 – Published: 2019-05-06 18:43 – Updated: 2026-05-22 13:18
VLAI CISA Previdian
Summary
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.
SSVC
Exploitation: active Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-13 04:55 UTC
CWE
  • remote code execution
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Impacted products
Vendor Product Version
n/a Sierra Wireless Affected: Sierra Wireless AirLink ES450 FW 4.9.3
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2018-4063

Status: Confirmed

Status Updated: 2025-12-12 01:00 CET

Exploited: Yes


Timestamps
First Seen: 2025-12-12
Asserted: 2025-12-12

Scope
Notes: Sierra Wireless AirLink ALEOS Unrestricted Upload of File with Dangerous Type Vulnerability | Affected: Sierra Wireless / AirLink ALEOS | Description: Sierra Wireless AirLink ALEOS contains an unrestricted upload of file with dangerous type vulnerability. 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. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization. | Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. | Due date: 2026-01-02 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://www.cisa.gov/news-events/ics-advisories/icsa-19-122-03 ; https://source.sierrawireless.com/resources/airlink/software_reference_docs/technical-bulletin/sierra-wireless-technical-bulletin---swi-psa-2019-003 ; https://source.sierrawireless.com/resources/airlink/hardware_reference_docs/airlink_es450_eol ; https://nvd.nist.gov/vuln/detail/CVE-2018-4063

Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev


Details
Cwes CWE-434
Feed CISA Known Exploited Vulnerabilities Catalog
Product AirLink ALEOS
Due Date 2026-01-02
Date Added 2025-12-12
Vendorproject Sierra Wireless
Vulnerabilityname Sierra Wireless AirLink ALEOS Unrestricted Upload of File with Dangerous Type Vulnerability
Knownransomwarecampaignuse Unknown

References

Created: 2026-10-02 08:09 CEST | Updated: 2026-10-02 08:09 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2018-4063

Status: Confirmed

Status Updated: 2026-06-01 12:46 CEST

Exploited: Yes


Timestamps
First Seen: 2026-06-01
Asserted: 2026-06-01

Scope
Notes: An exploitable remote code execution vulnerability exists in the upload.cgi functionality of Sierra Wireless AirLink ES450 FW 4.9.3. A specially... | Affected: Sierra Wireless / Sierra Wireless | CVSS: 8.8 (HIGH) | EPSS: 0.27059 | Used in malware: unknown | Listed 1 day ahead of CISA KEV | Not yet in CISA KEV: False

Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian


Details
Feed Previdian (previdian.com)
Title An exploitable remote code execution vulnerability exists in the upload.cgi functionality of Sierra Wireless AirLink ES450 FW 4.9.3. A specially...
Cve Id CVE-2018-4063
Vendor Sierra Wireless
Ghsa Id None
Product Sierra Wireless
Added Date 2026-06-01T10:46:08.186Z
Cvss Score 8.8
Epss Score 0.27059
Previous Ids
Cvss Severity HIGH
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.97989
Used In Malware unknown
Vulnerability Id CVE-2018-4063
Ahead Of Cisa Kev
{
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  "unit": "day"
}
Not Yet In Cisa Kev False

References

Created: 2026-10-02 09:09 CEST | Updated: 2026-10-02 09:09 CEST
Show details on NVD website

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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