What is CVE-2019-11857?

CVE-2019-11857 is a critical-severity vulnerability in Sierrawireless Airlink Es440, classified under Improper Input Validation. CVSS score: 9.1/10. Published 2020-08-21.

How severe is CVE-2019-11857?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Improper input validation in Sierrawireless Airlink Es440

CVE-2019-11857

Lack of input sanitization in AceManager of ALEOS before 4.12.0, 4.9.5 and 4.4.9 allows disclosure of sensitive system information.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2020-08-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.021 (80.6th percentile), scored 2026-09-28.

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 80.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

source.sierrawireless.com/resources/security-bulletins/sierra-wireless-technica… (Vendor Advisory)

Frequently asked questions

What is CVE-2019-11857?: CVE-2019-11857 is a critical-severity vulnerability in Sierrawireless Airlink Es440, classified under Improper Input Validation. CVSS score: 9.1/10. Published 2020-08-21.
How severe is CVE-2019-11857?: Critical severity. CVSS v3 base score is 9.1 out of 10.