CVE-2025-21458

HIGH
2025-08-06 [email protected]
7.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 28, 2026 - 19:05 vuln.today
Patch Released
Mar 28, 2026 - 19:05 nvd
Patch available
CVE Published
Aug 06, 2025 - 08:15 nvd
HIGH 7.8

Tags

Memory Corruption Buffer Overflow Use After Free Fastconnect 6900 Firmware Qam8255p Firmware Qam8650p Firmware Qam8775p Firmware Qca6174a Firmware Qca6698aq Firmware Qca6797aq Firmware Sa7255p Firmware Sa7775p Firmware Sa8255p Firmware Sa8620p Firmware Sa8650p Firmware Sa8775p Firmware Sa9000p Firmware Snapdragon 888 5g Mobile Platform Firmware Snapdragon 888 5G Mobile Platform Sm8350 Ac Firmware Sw5100 Firmware Sw5100p Firmware Wcd9380 Firmware Wcd9385 Firmware Wcn3980 Firmware Wcn3988 Firmware Wsa8830 Firmware Wsa8835 Firmware

Description

Memory corruption when IOCTL interface is called to map and unmap buffers simultaneously.

Analysis

Memory corruption when IOCTL interface is called to map and unmap buffers simultaneously. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.

Technical Context

This vulnerability is classified as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. Memory corruption when IOCTL interface is called to map and unmap buffers simultaneously. Affected products include: Qualcomm Fastconnect 6900 Firmware, Qualcomm Qam8255P Firmware, Qualcomm Qam8650P Firmware, Qualcomm Qam8775P Firmware, Qualcomm Qca6174A Firmware.

Affected Products

Qualcomm Fastconnect 6900 Firmware, Qualcomm Qam8255P Firmware, Qualcomm Qam8650P Firmware, Qualcomm Qam8775P Firmware, Qualcomm Qca6174A Firmware.

Remediation

A vendor patch is available. Apply the latest security update as soon as possible. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +39
POC: 0

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CVE-2025-21458 vulnerability details – vuln.today
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