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HIGH · 7.8

CVE-2026-21373

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
QualcommAqt1000 Firmware-
QualcommAqt1000-
QualcommCologne Firmware-
QualcommCologne-
QualcommFastconnect 6200 Firmware-
QualcommFastconnect 6200-
QualcommFastconnect 6700 Firmware-
QualcommFastconnect 6700-
QualcommFastconnect 6800 Firmware-
QualcommFastconnect 6800-
QualcommFastconnect 6900 Firmware-
QualcommFastconnect 6900-
QualcommFastconnect 7800 Firmware-
QualcommFastconnect 7800-
QualcommQca0000 Firmware-
QualcommQca0000-
QualcommQca6391 Firmware-
QualcommQca6391-
QualcommQca6420 Firmware-
QualcommQca6420-

Related Weaknesses (CWE)

CWE-126

References

FAQ

What is CVE-2026-21373?

CVE-2026-21373 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-2026-21373?

CVE-2026-21373 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-2026-21373?

Check the references section above for vendor advisories and patch information. Affected products include: Qualcomm Aqt1000 Firmware, Qualcomm Aqt1000, Qualcomm Cologne Firmware, Qualcomm Cologne, Qualcomm Fastconnect 6200 Firmware.