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HIGH · 7.8

CVE-2026-21375

Memory Corruption when accessing an output buffer without validating its size during IOCTL processing.

Vulnerability Description

Memory Corruption when accessing an output buffer without validating its size during IOCTL processing.

CVSS Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
QualcommWcn3988 Firmware-
QualcommWcn3988-
QualcommWsa8830 Firmware-
QualcommWsa8830-
QualcommWsa8832 Firmware-
QualcommWsa8832-
QualcommWsa8835 Firmware-
QualcommWsa8835-
QualcommWsa8840 Firmware-
QualcommWsa8840-
QualcommWsa8845 Firmware-
QualcommWsa8845-
QualcommWsa8845H Firmware-
QualcommWsa8845H-
QualcommX2000077 Firmware-
QualcommX2000077-
QualcommX2000086 Firmware-
QualcommX2000086-
QualcommX2000090 Firmware-
QualcommX2000090-

Related Weaknesses (CWE)

CWE-126

References

FAQ

What is CVE-2026-21375?

CVE-2026-21375 is a vulnerability with a CVSS score of 7.8 (HIGH). Memory Corruption when accessing an output buffer without validating its size during IOCTL processing.

How severe is CVE-2026-21375?

CVE-2026-21375 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-21375?

Check the references section above for vendor advisories and patch information. Affected products include: Qualcomm Wcn3988 Firmware, Qualcomm Wcn3988, Qualcomm Wsa8830 Firmware, Qualcomm Wsa8830, Qualcomm Wsa8832 Firmware.