CVE-2024-34577Network attack vector

Browser script execution via improper CGI input processing

Published Aug 30, 2024 · Updated May 12, 2026

Cross-site scripting in easysetup.cgi in affected ELECOM routers allows attackers to execute script in a logged-in user's browser. The CGI improperly processes attacker-controlled input when the authenticated user is induced to visit a malicious page, allowing the input to become executable browser content. Exploitation requires an active product login and user interaction; the resulting script can read or alter data accessible to the affected page.

CVSS severity6.1
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in easysetup.cgi in affected ELECOM routers allows attackers to execute script in a logged-in user's browser. The CGI improperly processes attacker-controlled input when the authenticated user is induced to visit a malicious page, allowing the input to become executable browser content. Exploitation requires an active product login and user interaction; the resulting script can read or alter data accessible to the affected page.

The record

CVE
CVE-2024-34577
Published
Aug 30, 2024
Updated
May 12, 2026
Vendor
ELECOM CO., LTD.
Product
WRC-X3000GS2-B
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 30, 2024CVE publishedPublication date reported by the CVE source.
  2. May 12, 2026Record 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=v1.08 and earlier

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ELECOM CO., LTD. · WRC-X3000GS2-Bversion=v1.08 and earlier
ELECOM CO., LTD. · WRC-X3000GS2A-Bversion=v1.08 and earlier
ELECOM CO., LTD. · WRC-X3000GST2-Bversion=v1.06 and earlier
ELECOM CO., LTD. · WRC-X3000GS2-Wversion=v1.08 and earlier

Published CVSS scores

4.6CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
6.1JPCERT/CCCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1NIST NVDCVSS: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.

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

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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