CVE-2019-11852: ALEOS ACEView Service Out-Of-Bounds Read

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% 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-125

Description

An 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 via the ACEviewservice, accessible by default on the LAN.

Affected products

SierraWireless ALEOS: before 4.13.0; before 4.9.5; before 4.4.9 — fixed in 4.13.0, 4.4.9, 4.9.5

How to fix

Upgrade to a fixed version: SierraWireless ALEOS 4.13.0, 4.4.9, 4.9.5. 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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