CVE-2021-34562Network attack vector

Browser script execution via unneutralized response input

Published Aug 31, 2021 · Updated Sep 17, 2024

Cross-site scripting in the Pepperl+Fuchs WirelessHART-Gateway 3.0.8 web interface allows remote attackers to inject JavaScript into responses. The vendor identifies the application response as the locus but has not disclosed the input field, request path, or response-generation operation that fails to neutralize it. Exploitation requires user interaction and executes code in the affected browser context, permitting limited disclosure or alteration of interface data.

CVSS severity6.1
Medium
EPSS probability0.58%
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 the Pepperl+Fuchs WirelessHART-Gateway 3.0.8 web interface allows remote attackers to inject JavaScript into responses. The vendor identifies the application response as the locus but has not disclosed the input field, request path, or response-generation operation that fails to neutralize it. Exploitation requires user interaction and executes code in the affected browser context, permitting limited disclosure or alteration of interface data.

The record

CVE
CVE-2021-34562
Published
Aug 31, 2021
Updated
Sep 17, 2024
Vendor
Pepperl+Fuchs
Product
WHA-GW-F2D2-0-AS-Z2-ETH.EIP
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 31, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=3.0.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Pepperl+Fuchs · WHA-GW-F2D2-0-AS-Z2-ETH.EIPversion=3.0.8
Pepperl+Fuchs · WHA-GW-F2D2-0-AS-Z2-ETHversion=3.0.8

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.4CERT VDECVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/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')
T1189Drive-by Compromise

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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