What is CVE-2018-11821?

CVE-2018-11821 is a high-severity vulnerability in Qualcomm Ipq8074, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2018-10-26.

How severe is CVE-2018-11821?

High severity. CVSS v3 base score is 7.8 out of 10.

Integer overflow in Qualcomm Ipq8074

CVE-2018-11821

Possible integer overflow may happen in WLAN during memory allocation in Snapdragon Mobile, Snapdragon Wear in version IPQ8074, MDM9206, MDM9607, MDM9650, SD 425, SD 427, SD 430, SD 435, SD 450, SD 625, SD 650/52, SD 835, SD 845, SD 850, SDA660, SDM630, SDM632, SDM636, SDM660, SDM710, Snapdragon_High_Med_2016

Vulnerability class: Integer Overflow

Published 2018-10-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (13.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.5% 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

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

www.qualcomm.com/company/product-security/bulletins (Vendor Advisory)
www.securityfocus.com/bid/107681 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-11821?: CVE-2018-11821 is a high-severity vulnerability in Qualcomm Ipq8074, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2018-10-26.
How severe is CVE-2018-11821?: High severity. CVSS v3 base score is 7.8 out of 10.