Is CVE-2025-9527 actively exploited?

CVE-2025-9527 has no public evidence of in-the-wild exploitation as of 2025-10-09.

What is the CVSS score for CVE-2025-9527?

CVE-2025-9527 has a CVSS score of 7.4 (HIGH severity). Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X.

How do I patch CVE-2025-9527?

Patch guidance is available from linksys security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-9527.

Which products are affected by CVE-2025-9527?

1 product: linksys e1700 firmware.

Fix CVE-2025-9527 - HIGH linksys e1700 firmware

Description

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 ack_policy 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.

CVSS Metrics

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector: network
Complexity: low
Privileges: low
User Action: none
Confidentiality: undefined
Integrity: undefined
Availability: undefined
Weaknesses: CWE-119 · Memory Buffer Errors CWE-121

Metadata

Primary Vendor: LINKSYS
Published: 8/27/2025
Last Modified: 10/9/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2025-9527

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary