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Vulnerability record · CVE-2019-11855 · published 21 August 2020

CVE-2019-11855: Sierrawireless aleos vulnerability

Sierrawireless · Aleos

An RPC server is enabled by default on the gateway's LAN of ALEOS before 4.12.0, 4.9.5, and 4.4.9.

9.8 CVSS 3.1 Critical EPSS 1.2% · top 31.9%
9.8CVSS 3.1 base score, v2 7.5
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

An RPC server is enabled by default on the gateway's LAN of ALEOS before 4.12.0, 4.9.5, and 4.4.9.

CVSS:3.1/AV:N/AC:L/PR:N/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-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%8.8CVE-2019-11859Sierrawireless aleos classic buffer overflow vulnerabilityA 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.EPSS 2.0%

Source: NIST National Vulnerability Database (record CVE-2019-11855), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.