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PatchSiren cyber security CVE debrief

CVE-2026-21379 Qualcomm, Inc. CVE debrief

CVE-2026-21379 is a high-severity memory corruption vulnerability with a CVSS score of 7.8. The vulnerability occurs when allocating memory with sizes that exceed the maximum allowed value. This CVE record was published on 2026-07-06T21:16:53.850Z and has not been modified since then. Security teams and administrators responsible for systems using Qualcomm products should assess and prioritize patching for this high-severity vulnerability. The CVSS vector is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Vendor
Qualcomm, Inc.
Product
Snapdragon
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-06
Original CVE updated
2026-07-07
Advisory published
2026-07-06
Advisory updated
2026-07-07

Who should care

Security teams and administrators responsible for systems using Qualcomm products should assess and prioritize patching for this high-severity vulnerability. This includes operators, platforms, vulnerability-management, and security teams that may be impacted by the memory corruption vulnerability.

Technical summary

CVE-2026-21379 is a high-severity memory corruption vulnerability with a CVSS score of 7.8. The vulnerability occurs when allocating memory with sizes that exceed the maximum allowed value. The CVSS vector is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Affected product context indicates that security teams and administrators responsible for systems using Qualcomm products should assess and prioritize patching.

Defensive priority

High priority due to the high CVSS score and potential for memory corruption. Defensive impact is significant, and source-grounded technical framing is necessary to understand the vulnerability.

Recommended defensive actions

  • Review and apply patches from Qualcomm as available
  • Inventory systems for potential exposure
  • Monitor for suspicious activity
  • Implement compensating controls as needed
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

Evidence is limited; primary official records indicate a high-severity memory corruption vulnerability. Further verification is recommended. The CVE record was published on 2026-07-06T21:16:53.850Z and has not been modified since then. Affected product deployments need to be confirmed in managed environments. Review of the supplied official advisory or CVE record is necessary to validate affected scope, severity, and vendor guidance.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-21379 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-21379

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

  • CVE-2026-21379 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-21379

    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.