High 7.8Published Aug 4, 2026

CVE-2026-21366Integer Overflow or Wraparound in Data Network Stack & Connectivity

Updated under an hour ago (Oct 27, 2026, 5:10 PM ET)

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It affects Qualcomm, Inc. Snapdragon and 33 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Qualcomm, Inc. Snapdragon

Exploited in the last 30 days

Memory corruption while processing a packet with a size close to the maximum allowed value.

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-190
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: qualcomm
NVD analysis: Analyzed
Record last updated: Aug 4, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Qualcomm, Inc. Snapdragon qualcomm:snapdragon (from the name)	LeMans_AU_LGIT; LeMansAU; QAM8255P; QAM8295P; QAM8620P; QAMSRV1H; QAMSRV1M; QCA6574AU; and 25 more ranges	CNA record
qualcomm lemans_au_lgit_firmware qualcomm:lemans_au_lgit_firmware	all versions	NVD
qualcomm lemansau_firmware qualcomm:lemansau_firmware	all versions	NVD
qualcomm qam8255p_firmware qualcomm:qam8255p_firmware	all versions	NVD
qualcomm qam8295p_firmware qualcomm:qam8295p_firmware	all versions	NVD
qualcomm qam8620p_firmware qualcomm:qam8620p_firmware	all versions	NVD
qualcomm qamsrv1h_firmware qualcomm:qamsrv1h_firmware	all versions	NVD
qualcomm qamsrv1m_firmware qualcomm:qamsrv1m_firmware	all versions	NVD
qualcomm qca6574au_firmware qualcomm:qca6574au_firmware	all versions	NVD
qualcomm qca6595_firmware qualcomm:qca6595_firmware	all versions	NVD
1–10 of 34

References

References

https://docs.qualcomm.com/product/publicresources/securitybulletin/august-2026-bulletin.html	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.