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Vulnerability record · CVE-2019-11859 · published 21 August 2020

CVE-2019-11859: Sierrawireless aleos classic buffer overflow vulnerability

Sierrawireless · Aleos

A buffer overflow exists in the SMS handler API of ALEOS before 4.13.0, 4.9.5, 4.9.4 that may allow code execution as root.

8.8 CVSS 3.1 High EPSS 2.0% · top 20.3% CWE-120 · Classic buffer overflow
8.8CVSS 3.1 base score, v2 9.0
2.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A buffer overflow exists in the SMS handler API of ALEOS before 4.13.0, 4.9.5, 4.9.4 that may allow code execution as root.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://source.sierrawireless.com/resources/security-bulletins/sierra-wireless-technical-bulletin---swi-psa-2020-004/ Vendor Advisory
https://source.sierrawireless.com/resources/security-bulletins/sierra-wireless-technical-bulletin---swi-psa-2020-004/ Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2018-4063Sierra Wireless ALEOS upload.cgi unrestricted file upload RCESierra Wireless AirLink ES450 running ALEOS 4.9.3 exposes an unrestricted file upload in upload.cgi. A crafted HTTP request can upload executable cod…KEVEPSS 27%analysed10.0CVE-2015-2897Sierrawireless aleos information exposure vulnerabilitySierra Wireless ALEOS before 4.4.2 on AirLink ES, GX, and LS devices has hardcoded root accounts, which makes it easier for remote attackers to obtai…EPSS 2.3%9.8CVE-2019-11851Sierrawireless aleos classic buffer overflow vulnerabilityThe ACENet service in Sierra Wireless ALEOS before 4.4.9, 4.5.x through 4.9.x before 4.9.5, and 4.10.x through 4.13.x before 4.14.0 allows remote att…EPSS 1.6%9.8CVE-2020-8782Sierrawireless aleos vulnerabilityUnauthenticated RPC server on ALEOS before 4.4.9, 4.9.5, and 4.14.0 allows remote code execution.EPSS 1.8%9.8CVE-2019-11855Sierrawireless aleos vulnerabilityAn RPC server is enabled by default on the gateway's LAN of ALEOS before 4.12.0, 4.9.5, and 4.4.9.EPSS 1.2%9.8CVE-2018-10251Sierrawireless aleos missing authorization vulnerabilityA vulnerability in Sierra Wireless AirLink GX400, GX440, ES440, and LS300 routers with firmware before 4.4.7 and GX450, ES450, RV50, RV50X, MP70, and…EPSS 4.5%9.1CVE-2019-11852Sierrawireless aleos out-of-bounds read vulnerabilityAn out-of-bounds reads vulnerability exists in the ACEView Service of ALEOS before 4.13.0, 4.9.5, and 4.4.9. Sensitive information may be disclosed v…EPSS 0.94%8.8CVE-2022-46649Sierrawireless aleos os command injection vulnerabilityAcemanager in ALEOS before version 4.16 allows a user with valid credentials to manipulate the IP logging operation to execute arbitrary shell comman…EPSS 2.3%

Source: NIST National Vulnerability Database (record CVE-2019-11859), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.