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Vulnerability record · CVE-2026-21384 · published 6 July 2026

CVE-2026-21384: Qualcomm fastconnect 6700 firmware out-of-bounds write vulnerability

Qualcomm · Fastconnect 6700 Firmware

Memory Corruption when updating prepared commands with invalid port indices based on user space input exceeds supported read client limits.

5.3 CVSS 3.1 Medium EPSS 0.08% · top 99.9% CWE-787 · Out-of-bounds write
5.3CVSS 3.1 base score
0.08%EPSS exploitation probability, 30 days
NoNot in CISA KEV
79Affected product versions listed by NVD
1References
7 Jul 2026Last modified by NVD

Description

Memory Corruption when updating prepared commands with invalid port indices based on user space input exceeds supported read client limits.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Affected products

79 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://docs.qualcomm.com/product/publicresources/securitybulletin/july-2026-bulletin.html PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-21384), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.