CVE-2025-9527: Linksys E1700 QoSSetup stack-based overflow

Published Aug 27, 2025
·
Updated

A vulnerability was found in Linksys E1700 1.0.0.4.003. This affects the function QoSSetup of the file /goform/QoSSetup. Performing manipulation of the argument ackpolicy results in stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected Software

3 affected components
LinkSys E1700
All of the following
LinkSys E1700 Firmware=1.0.0.4.003
LinkSys E1700

Event History

Aug 27, 2025
CVE Published
via MITRE·01:02 PM
Data Sourced
via MITRE·01:02 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·02:15 PM
DescriptionSeverityWeaknessAffected Software
Feb 28, 57989
Event
via FIRST·01:11 AM
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Frequently Asked Questions

1

What is the severity of CVE-2025-9527?

CVE-2025-9527 has a high severity rating due to the potential for remote exploitation leading to a stack-based buffer overflow.

2

How do I fix CVE-2025-9527?

To fix CVE-2025-9527, it is recommended to update the Linksys E1700 firmware to the latest version that addresses this vulnerability.

3

Which devices are affected by CVE-2025-9527?

CVE-2025-9527 specifically affects the Linksys E1700 router running firmware version 1.0.0.4.003.

4

What is the impact of CVE-2025-9527?

The impact of CVE-2025-9527 includes the possibility of unauthorized remote access and potential control over the affected Linksys E1700 device.

5

How can attackers exploit CVE-2025-9527?

Attackers can exploit CVE-2025-9527 by manipulating the ack_policy argument in the QoSSetup function to trigger a stack-based buffer overflow.

Contact

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