What is CVE-2023-21640?

CVE-2023-21640 is a medium-severity vulnerability in Qualcomm Fastconnect 6900, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.7/10. Published 2023-07-04.

How severe is CVE-2023-21640?

Medium severity. CVSS v3 base score is 6.7 out of 10.

Buffer overflow in Qualcomm Fastconnect 6900

CVE-2023-21640

Memory corruption in Linux when the file upload API is called with parameters having large buffer.

Vulnerability class: Buffer Overflow

EPSS: 0.001 (1.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Qualcomm Fastconnect_6900
Qualcomm Fastconnect_6900_firmware
Qualcomm Fastconnect_7800
Qualcomm Fastconnect_7800_firmware
Qualcomm Snapdragon_8_gen_1
Qualcomm Snapdragon_8_gen_1_firmware
Qualcomm Wcd9380
Qualcomm Wcd9380_firmware
Qualcomm Wsa8830
Qualcomm Wsa8830_firmware

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)
CWE-787 — Out-of-bounds Write

References

product-security@qualcomm.com (Vendor Advisory)

Frequently asked questions

What is CVE-2023-21640?: CVE-2023-21640 is a medium-severity vulnerability in Qualcomm Fastconnect 6900, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.7/10. Published 2023-07-04.
How severe is CVE-2023-21640?: Medium severity. CVSS v3 base score is 6.7 out of 10.