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PatchSiren cyber security CVE debrief

CVE-2026-21383 Qualcomm, Inc. CVE debrief

A cryptographic issue was found in various Qualcomm products, related to the use of a static initialization vector for AES-GCM key wrapping. This could potentially compromise the security of encrypted data, as AES-GCM requires a unique initialization vector for each encryption operation to ensure security. The affected products include multiple Qualcomm chipsets and firmware versions. Users of these products should consult the vulnerability details provided by Qualcomm and apply any recommended patches or mitigations.

Vendor
Qualcomm, Inc.
Product
Snapdragon
CVSS
HIGH 7.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-06
Original CVE updated
2026-07-08
Advisory published
2026-07-06
Advisory updated
2026-07-08

Who should care

Users and administrators of affected Qualcomm products, including those used in mobile devices, IoT devices, and other embedded systems, should also consider the potential impact on their specific operational environments, review configurations for compliance with cryptographic best practices, and ensure that security teams are aware of the vulnerability and its potential implications for their platforms and vulnerability management processes.

Technical summary

The vulnerability is due to improper use of AES-GCM, which requires a unique initialization vector for each encryption operation. Using a static initialization vector could allow attackers to compromise the confidentiality and integrity of encrypted data. The Common Vulnerability Scoring System (CVSS) score for this vulnerability is 7.1, indicating a high severity.

Defensive priority

High priority should be given to patching or mitigating this vulnerability, especially for devices or systems handling sensitive data.

Recommended defensive actions

  • Apply patches or updates provided by Qualcomm as soon as possible.
  • Use secure key wrapping mechanisms that comply with cryptographic best practices.
  • Regularly review and update cryptographic configurations to ensure compliance with current standards.
  • Monitor for and respond to potential security incidents related to this vulnerability.

Evidence notes

The CVE record was published on 2026-07-06T21:16:53.973Z and has not been modified since then. The NVD entry is currently Analyzed. Limited information is available about affected scope and vendor remediation efforts.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-21383 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-21383

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-21383 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-21383

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.