CVE-2025-29231Network attack vector

Stored XSS via unsanitized WAN setup fields

Published Dec 16, 2025 · Updated Dec 16, 2025

Stored XSS in Linksys E5600 1.1.0.26 allows remote attackers to execute scripts through crafted hostname or domainName values. The page_save component stores these WAN Setup fields without adequate sanitization, and the System Status page later renders them so a visiting administrator’s browser executes the payload. A crafted value must first be saved and an administrator must then open System Status; execution occurs in that browser context and can expose the session or permit router changes.

CVSS severity6.1
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Linksys E5600 1.1.0.26 allows remote attackers to execute scripts through crafted hostname or domainName values. The page_save component stores these WAN Setup fields without adequate sanitization, and the System Status page later renders them so a visiting administrator’s browser executes the payload. A crafted value must first be saved and an administrator must then open System Status; execution occurs in that browser context and can expose the session or permit router changes.

The record

CVE
CVE-2025-29231
Published
Dec 16, 2025
Updated
Dec 16, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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