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Vulnerability record · CVE-2025-21476 · published 24 September 2025

CVE-2025-21476: Qualcomm qcs6490 firmware classic buffer overflow vulnerability

Qualcomm · Qcs6490 Firmware

Memory corruption when passing parameters to the Trusted Virtual Machine during the handshake.

7.8 CVSS 3.1 High EPSS 0.09% · top 99.7% CWE-120 · Classic buffer overflow
7.8CVSS 3.1 base score
0.09%EPSS exploitation probability, 30 days
NoNot in CISA KEV
42Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

Memory corruption when passing parameters to the Trusted Virtual Machine during the handshake.

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

Affected products

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

References

LinkTags
https://docs.qualcomm.com/product/publicresources/securitybulletin/september-2025-bulletin.html Vendor 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-2025-21476), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.