What’s Vulnerable › Vulnerabilities

CVE-2019-11859: ALEOS SMS Handler Buffer Overflow

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% 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-120

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.

Affected products

• SierraWireless ALEOS: through 4.12.0; through 4.9.4; through 4.4.8

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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