SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2023-43521

Memory corruption when multiple listeners are being registered with the same file descriptor.

HIGH 7.8EPSS 0.11%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.11%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Memory corruption when multiple listeners are being registered with the same file descriptor.

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
0.11% probability · 1th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-416
Affected
qualcomm/ar8035 firmware · qualcomm/c-v2x 9150 firmware · qualcomm/fastconnect 6800 firmware · qualcomm/fastconnect 6900 firmware · qualcomm/fastconnect 7800 firmware · qualcomm/qam8255p firmware · qualcomm/qam8295p firmware · qualcomm/qam8650p firmware · qualcomm/qam8775p firmware · qualcomm/qamsrv1h firmware · qualcomm/qamsrv1m firmware · qualcomm/qca6174a firmware · qualcomm/qca6391 firmware · qualcomm/qca6426 firmware · qualcomm/qca6436 firmware · qualcomm/qca6574au firmware · qualcomm/qca6584au firmware · qualcomm/qca6696 firmware · qualcomm/qca6698aq firmware · qualcomm/qca8081 firmware · +40 more
Source
product-security@qualcomm.com
EPSS trend
0%3%5%27 October 2026: 0.11%27 October 202627 October 2026

EPSS 0.1% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.