Is CVE-2026-21373 actively exploited?

CVE-2026-21373 has no public evidence of in-the-wild exploitation as of 2026-04-08.

What is the CVSS score for CVE-2026-21373?

CVE-2026-21373 has a CVSS score of 7.8 (HIGH severity). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2026-21373?

Patch guidance is available from qualcomm security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-21373.

Fix CVE-2026-21373 - HIGH qualcomm aqt1000 firmware

Q: Which products are affected by CVE-2026-21373?

54 products: qualcomm aqt1000 firmware, qualcomm cologne firmware, qualcomm fastconnect 6200 firmware, qualcomm fastconnect 6700 firmware, qualcomm fastconnect 6800 firmware, and 49 more.

Description

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

CVSS Metrics

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector: local
Complexity: low
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-126

Metadata

Primary Vendor: QUALCOMM
Published: 4/6/2026
Last Modified: 4/8/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

qualcomm : aqt1000_firmwarequalcomm : cologne_firmwarequalcomm : fastconnect_6200_firmwarequalcomm : fastconnect_6700_firmwarequalcomm : fastconnect_6800_firmwarequalcomm : fastconnect_6900_firmwarequalcomm : fastconnect_7800_firmwarequalcomm : qca0000_firmwarequalcomm : qca6391_firmwarequalcomm : qca6420_firmwarequalcomm : qca6430_firmwarequalcomm : qcm5430_firmwarequalcomm : qcm6490_firmwarequalcomm : video_collaboration_vc3_platform_firmwarequalcomm : sc8380xp_firmwarequalcomm : sm6250_firmwarequalcomm : snapdragon_460_mobile_platform_firmwarequalcomm : snapdragon_662_mobile_platform_firmwarequalcomm : snapdragon_7c_compute_platform_firmwarequalcomm : snapdragon_7c_gen_2_compute_platform_firmwarequalcomm : snapdragon_7c\+_gen_3_compute_firmwarequalcomm : snapdragon_8c_compute_platform_firmwarequalcomm : snapdragon_8c_compute_platform_\(sc8180xp-ad\)_firmwarequalcomm : snapdragon_8cx_compute_platform_firmwarequalcomm : snapdragon_8cx_compute_platform_\"poipu_pro\"_firmwarequalcomm : snapdragon_8cx_gen_2_5g_compute_platform_firmwarequalcomm : snapdragon_8cx_gen_2_5g_compute_platform_\"poipu_pro\"_firmwarequalcomm : snapdragon_8cx_gen_3_compute_platform_firmwarequalcomm : snapdragon_ar1_gen_1_platform_firmwarequalcomm : wcd9340_firmwarequalcomm : wcd9341_firmwarequalcomm : wcd9370_firmwarequalcomm : wcd9375_firmwarequalcomm : wcd9378c_firmwarequalcomm : wcd9380_firmwarequalcomm : wcd9385_firmwarequalcomm : wcn3950_firmwarequalcomm : wcn3988_firmwarequalcomm : wsa8810_firmwarequalcomm : wsa8815_firmwarequalcomm : wsa8830_firmwarequalcomm : wsa8832_firmwarequalcomm : wsa8835_firmwarequalcomm : wsa8840_firmwarequalcomm : wsa8845_firmwarequalcomm : wsa8845h_firmwarequalcomm : x2000077_firmwarequalcomm : x2000086_firmwarequalcomm : x2000090_firmwarequalcomm : x2000092_firmwarequalcomm : x2000094_firmwarequalcomm : xg101002_firmwarequalcomm : xg101032_firmwarequalcomm : xg101039_firmware

Remediation Guidance

Executive Summary

View on NIST NVD