CVE-2022-21238Public exploitNetwork attack vector

Browser script execution via unsanitized resmsg eval

Published May 12, 2022 · Updated Apr 15, 2025

Cross-site scripting in info.jsp in InHand Networks InRouter302 3.5.4 allows remote attackers to execute JavaScript via an HTTP request. The page places the _resmsg query value into the resmsg variable and passes it to eval without neutralizing script content. The endpoint lacks access restrictions, but a victim must render the crafted response; script execution occurs in that browser session with access to router-origin data.

CVSS severity6.1
Medium
EPSS probability1.44%
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 info.jsp in InHand Networks InRouter302 3.5.4 allows remote attackers to execute JavaScript via an HTTP request. The page places the _resmsg query value into the resmsg variable and passes it to eval without neutralizing script content. The endpoint lacks access restrictions, but a victim must render the crafted response; script execution occurs in that browser session with access to router-origin data.

The record

CVE
CVE-2022-21238
Published
May 12, 2022
Updated
Apr 15, 2025
Vendor
InHand Networks
Product
InRouter302
Classifications
CWE-79, CWE-80, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 12, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 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?

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

  1. Affected versionversion=V3.5.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

InHand Networks · InRouter302version=V3.5.4

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
5.4Cisco TalosCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
T1203Exploitation for Client Execution

Public exploit references

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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