Which products and versions are affected by CVE-2025-9528?

Affected: E1700 Firmware (Linksys) versions 1.0.0.4.003; E1700 versions >= 1.0.0.4.003. The full list is in the CVE brief.

Is CVE-2025-9528 being exploited in the wild?

It is exploited in the wild, listed in Industry KEV feed since Nov 24, 2025.

Is CVE-2025-9528 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2025-9528?

Public exploit code is available.

Is there a fix for CVE-2025-9528?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2025-9528 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2025-9528

LowExploitedPublic exploit

A vulnerability was determined in Linksys E1700 1.0.0.4.003.

Published Aug 27, 2025 · Updated Apr 28, 2026

Key Facts

Patch immediately

CVE-2025-9528 is a low-severity vulnerability (CVSS 2.0 v4) affecting E1700 Firmware (Linksys), E1700.
It is exploited in the wild, listed in Industry KEV feed since Nov 24, 2025. Public exploit code is available.
EPSS estimates a 54% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v4

2.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/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

EPSS (30-day exploit likelihood)

54%

Higher than 99.0% of all scored CVEs

Exploited in the wild

Yes

1 catalog listing

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2025-9528 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

A vulnerability was determined in Linksys E1700 1.0.0.4.003. This vulnerability affects the function systemCommand of the file /goform/systemCommand. Executing manipulation of the argument command can lead to os command injection. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
Industry KEV feed	Nov 24, 2025	n/a	Not reported

Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
E1700 FirmwareLinksys	1.0.0.4.003	n/a
E1700	>= 1.0.0.4.003	n/a

Timeline

Publicly disclosed
Aug 27, 2025
Added to Industry KEV feed
Nov 24, 2025
Last updated
Apr 28, 2026

Weakness Type

CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

References

6 more references in the full CVE brief

FAQ

Common Questions.

A vulnerability was determined in Linksys E1700 1.0.0.4.003.
Affected: E1700 Firmware (Linksys) versions 1.0.0.4.003; E1700 versions >= 1.0.0.4.003. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Nov 24, 2025.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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