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Vulnerability record · CVE-2023-21631 · published 4 July 2023

CVE-2023-21631: Qualcomm 315 5g firmware improper input validation vulnerability

Qualcomm · 315 5g Firmware

Weak Configuration due to improper input validation in Modem while processing LTE security mode command message received from network.

9.8 CVSS 3.1 Critical EPSS 0.36% · top 72.1% CWE-20 · Improper input validation
9.8CVSS 3.1 base score
0.36%EPSS exploitation probability, 30 days
NoNot in CISA KEV
150Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Weak Configuration due to improper input validation in Modem while processing LTE security mode command message received from network.

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

Affected products

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

References

LinkTags
https://www.qualcomm.com/company/product-security/bulletins/july-2023-bulletin Vendor Advisory
https://www.qualcomm.com/company/product-security/bulletins/july-2023-bulletin 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-2023-21631), CISA KEV, FIRST EPSS (scores of 2026-10-09). This page is refreshed as NVD updates the record.