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CVE-2026-21367

Buffer Over-read in WLAN Firmware

Published: Apr 6, 2026Updated: Apr 8, 2026 Sources: CVE List NVD BDUCWE-126
NVD MITRE
7.6CVSSHIGH
EPSS Score
0.2%
Top 89.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Transient DOS when processing nonstandard FILS Discovery Frames with out-of-range action sizes during initial scans.

CVSS Vector Breakdown

AV:NAC:HPR:HUI:RS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:HPrivileges Required
High
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-126

Affected Products

ar8035 firmwarequalcomm
EmbeddedFirmware
Hardware Firmware
cologne firmwarequalcomm
EmbeddedFirmware
Hardware Firmware / network-adapter
csr8811 firmwarequalcomm
EmbeddedFirmware
Hardware Firmware
fastconnect 6200 firmwarequalcomm
EmbeddedFirmware
Hardware Firmware
fastconnect 6700 firmwarequalcomm
EmbeddedFirmware
Hardware Firmware / network-adapter
qualcommcommercialUSHardware Firmwareaka qualcomm, inc., qualcomm inc, qualcomm incorporated
and 296 more affected products View all →

Exploitability

Official Patch Available

References

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

Timeline

Published
Apr 6, 2026
Last Updated
Apr 8, 2026

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