SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2026-21373

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

HIGH 7.8EPSS 0.08%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.08%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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

CVSS 3.1
7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
0.08% probability · 0th percentile
CISA KEV
Not listed
Weakness
CWE-126
Affected
qualcomm/aqt1000 firmware · qualcomm/cologne firmware · qualcomm/fastconnect 6200 firmware · qualcomm/fastconnect 6700 firmware · qualcomm/fastconnect 6800 firmware · qualcomm/fastconnect 6900 firmware · qualcomm/fastconnect 7800 firmware · qualcomm/qca0000 firmware · qualcomm/qca6391 firmware · qualcomm/qca6420 firmware · qualcomm/qca6430 firmware · qualcomm/wcd9385 firmware · qualcomm/wcn3950 firmware · qualcomm/wcn3988 firmware · qualcomm/wsa8810 firmware · qualcomm/wsa8815 firmware · qualcomm/wsa8830 firmware · qualcomm/wsa8832 firmware · qualcomm/wsa8835 firmware · qualcomm/wsa8840 firmware · +34 more
Source
product-security@qualcomm.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.