What is CVE-2018-11993?

CVE-2018-11993 is a high-severity vulnerability in Qualcomm Mdm9206, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2019-01-18.

How severe is CVE-2018-11993?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Qualcomm Mdm9206

CVE-2018-11993

Improper check while accessing the local memory stack on MQTT connection request can lead to buffer overflow in snapdragon wear in versions MDM9206, MDM9607

Vulnerability class: Buffer Overflow

Published 2019-01-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (29.8th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Qualcomm Mdm9206
Qualcomm Mdm9206 Firmware
Qualcomm Mdm9607
Qualcomm Mdm9607 Firmware
Qualcomm, Inc. Snapdragon Wear — versions MDM9206, MDM9607

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

www.qualcomm.com/company/product-security/bulletins (Vendor Advisory)

Frequently asked questions

What is CVE-2018-11993?: CVE-2018-11993 is a high-severity vulnerability in Qualcomm Mdm9206, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2019-01-18.
How severe is CVE-2018-11993?: High severity. CVSS v3 base score is 8.8 out of 10.