CVE-2026-21366

Integer Overflow or Wraparound in Data Network Stack & Connectivity

State: Published
Severity: 7.8 High
Published: Aug 4, 2026
Updated: Aug 5, 2026
Reserved: Dec 17, 2025

Description

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

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	qualcomm

Weaknesses

CWE-190 Integer Overflow or Wraparound

Affected Products

Product	Versions
SnapdragonQualcomm, Inc.	LeMans_AU_LGITAffected LeMansAUAffected QAM8255PAffected QAM8295PAffected QAM8620PAffected QAMSRV1HAffected QAMSRV1MAffected QCA6574AUAffected QCA6595Affected QCA6595AUAffected QCA6688AQAffected QCA6696Affected QCA6698AQAffected QCA6797AQAffected QCA8695AUAffected SA6145PAffected SA6150PAffected SA6155PAffected SA7255PAffected SA7775PAffected SA8145PAffected SA8150PAffected SA8155PAffected SA8195PAffected SA8255PAffected and 8 more versions

Product

Versions

SnapdragonQualcomm, Inc.

LeMans_AU_LGITAffected
LeMansAUAffected
QAM8255PAffected
QAM8295PAffected
QAM8620PAffected
QAMSRV1HAffected
QAMSRV1MAffected
QCA6574AUAffected
QCA6595Affected
QCA6595AUAffected
QCA6688AQAffected
QCA6696Affected
QCA6698AQAffected
QCA6797AQAffected
QCA8695AUAffected
SA6145PAffected
SA6150PAffected
SA6155PAffected
SA7255PAffected
SA7775PAffected
SA8145PAffected
SA8150PAffected
SA8155PAffected
SA8195PAffected
SA8255PAffected
and 8 more versions

References

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

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