How severe is CVE-2019-11862?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Sierrawireless Airlink Es440

CVE-2019-11862

The SSH service on ALEOS before 4.12.0, 4.9.5, 4.4.9 allows traffic proxying.

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

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (50.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

References

source.sierrawireless.com/resources/airlink/software_reference_docs/technical-b… (Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2019-11862?: CVE-2019-11862 is a high-severity vulnerability in Sierrawireless Airlink Es440. CVSS score: 8.1/10. Published 2020-08-21.
How severe is CVE-2019-11862?: High severity. CVSS v3 base score is 8.1 out of 10.