How to fix CVE-2025-21437?

Within 7 days: Identify all affected systems and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.

Is Use After Free affected by CVE-2025-21437?

CVE-2025-21437 presents notable security risk, a use-after-free vulnerability rated CVSS 7.8. Exploitation could compromise the security of affected deployments. Organizations should apply vendor updates when available and consider compensating controls in the interim.

CVE-2025-21437

HIGH

2025-04-07 [email protected]

7.8

CVSS 3.1

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

Analysis Generated

Mar 28, 2026 - 18:35 vuln.today

CVE Published

Apr 07, 2025 - 11:15 nvd

HIGH 7.8

Tags

Use After Free Memory Corruption Buffer Overflow Qam8255p Firmware Qam8295p Firmware Qam8620p Firmware Qam8650p Firmware Qam8775p Firmware Qamsrv1h Firmware Qamsrv1m Firmware Qca6574 Firmware Qca6574a Firmware Qca6574au Firmware Qca6595 Firmware Qca6595au Firmware Qca6688aq Firmware Qca6696 Firmware Qca6698aq Firmware Qca6797aq Firmware Sa6155p Firmware Sa7255p Firmware Sa7775p Firmware Sa8155p Firmware Sa8195p Firmware Sa8255p Firmware Sa8295p Firmware Sa8620p Firmware Sa8650p Firmware Sa8770p Firmware Sa8775p Firmware Sa9000p Firmware Srv1h Firmware Srv1l Firmware Srv1m Firmware

Description

Memory corruption while processing memory map or unmap IOCTL operations simultaneously.

Analysis

Memory corruption while processing memory map or unmap IOCTL operations simultaneously. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.

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 while processing memory map or unmap IOCTL operations simultaneously. Affected products include: Qualcomm Qam8255P Firmware, Qualcomm Qam8295P Firmware, Qualcomm Qam8620P Firmware, Qualcomm Qam8650P Firmware, Qualcomm Qam8775P Firmware.

Affected Products

Qualcomm Qam8255P Firmware, Qualcomm Qam8295P Firmware, Qualcomm Qam8620P Firmware, Qualcomm Qam8650P Firmware, Qualcomm Qam8775P Firmware.

Remediation

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.1

CVSS: +39

POC: 0

CVE-2025-21437 vulnerability details – vuln.today

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CVE-2025-21437

CVSS Vector

Lifecycle Timeline

Tags

Description

Analysis

Technical Context

Affected Products

Remediation

Priority Score

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External POC / Exploit Code