CVE-2018-4063An exploitable remote code execution vulnerability exists in the upload.cgi functionality of Sierra Wireless AirLink ES450 FW 4.9.3.
Updated under an hour ago ()
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It affects sierrawireless aleos. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Dec 12, 2025; federal agencies had to remediate by Jan 2, 2026. Treat that date as your deadline.
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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 (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-434
- Known exploited
- Added to CISA KEV Dec 12, 2025; federal remediation due Jan 2, 2026Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 27.06% (percentile 98)
- Assigned by
- talos
- NVD analysis
- Analyzed
- Record last updated
- May 22, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
sierrawireless aleos sierrawireless:aleos | before 4.4.9; before 4.11.0; before 4.9.4 | NVD |
References
- http://packetstormsecurity.com/files/152648/Sierra-Wireless-AirLink-ES450-ACEManager-upload.cgi-Remote-Code-Execution.htmlx-refsource-misc, exploit, vdb-entry
- https://ics-cert.us-cert.gov/advisories/ICSA-19-122-03x-refsource-misc, third-party-advisory, us-government-resource
- http://www.securityfocus.com/bid/108147vdb-entry, x-refsource-bid, broken-link
- https://talosintelligence.com/vulnerability_reports/TALOS-2018-0748x-refsource-misc, exploit, third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-4063us-government-resource
- https://www.forescout.com/blog/ot-network-security-threats-industrial-routers-under-attack/exploit, third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.