What is CVE-2018-11820?

CVE-2018-11820 is a medium-severity vulnerability in Qualcomm Ipq8074. CVSS score: 5.5/10. Published 2019-02-25.

How severe is CVE-2018-11820?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Qualcomm Ipq8074

CVE-2018-11820

Use of non-time constant memcmp function creates side channel that leaks information and leads to cryptographic issues in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon IoT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wired Infrastructure and Networking in versions IPQ8074, MDM9150, MDM9206, MDM9607, MDM9640, MDM9650, MDM9655, MSM8996AU, QCA8081, QCS605, SD 210/SD 212/SD 205, SD 410/12, SD 425, SD 427, SD 430, SD 435, SD 439 / SD 429, SD 450, SD 615/16/SD 415, SD 625, SD 632, SD 636, SD 650/52, SD 712 / SD 710 / SD 670, SD 800, SD 820, SD 820A, SD 835, SD 845 / SD 850, SD 8CX, SDA660, SDM439, SDM630, SDM660, Snapdragon_High_Med_2016, SXR1130.

Published 2019-02-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.002 (12.6th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

References

www.qualcomm.com/company/product-security/bulletins (Vendor Advisory)
www.securityfocus.com/bid/106845 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-11820?: CVE-2018-11820 is a medium-severity vulnerability in Qualcomm Ipq8074. CVSS score: 5.5/10. Published 2019-02-25.
How severe is CVE-2018-11820?: Medium severity. CVSS v3 base score is 5.5 out of 10.