CVE-2024-1406

Unauthenticated system information disclosure via diagnostic page

Published Feb 10, 2024 · Updated Aug 29, 2024

Information disclosure in Linksys WRT54GL 4.30.18 allows remote attackers to read system data through /SysInfo1.htm. The web management interface serves the diagnostic page without authentication, but published sources do not identify the exposed fields or faulty authorization logic. An attacker must reach the router's adjacent network; the documented consequence is limited to unauthorized data access.

CVSS severity4.3
Medium
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Linksys WRT54GL 4.30.18 allows remote attackers to read system data through /SysInfo1.htm. The web management interface serves the diagnostic page without authentication, but published sources do not identify the exposed fields or faulty authorization logic. An attacker must reach the router's adjacent network; the documented consequence is limited to unauthorized data access.

The record

CVE
CVE-2024-1406
Published
Feb 10, 2024
Updated
Aug 29, 2024
Vendor
Linksys
Product
WRT54GL
Classifications
CWE-200, T1592
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 10, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 29, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.30.18

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Linksys · WRT54GLversion=4.30.18

Published CVSS scores

4.3VulDBCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
3.3VulDBAV:A/AC:L/Au:N/C:P/I:N/A:N
4.3NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1592Gather Victim Host Information

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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