What’s Vulnerable › Vulnerabilities

CVE-2019-11849: ALEOS AT API Stack Overflow

• Severity: medium (CVSS 6.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-08-21 · updated 2026-06-17
• Weakness: CWE-787

Description

A stack overflow vulnerabiltity exists in the AT command APIs of ALEOS before 4.11.0. The vulnerability may allow code execution.

Affected products

• SierraWireless ALEOS: before 4.11.0 — fixed in 4.11.0

How to fix

Upgrade to a fixed version: SierraWireless ALEOS 4.11.0. Check the vendor advisory for mitigations.

References

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

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