CVE-2021-34564

Credential disclosure via cleartext cookie storage

Published Aug 31, 2021 · Updated Sep 17, 2024

Cleartext cookie storage in Pepperl+Fuchs WirelessHART-Gateway 3.0.9 allows local users to read gateway credentials through a stolen cookie. The gateway stores sensitive authentication data in a browser-accessible cookie without confidentiality protection. Exploitation requires access to the user's application or browser, a separate means to steal the cookie, and user interaction; the resulting impact is credential disclosure only.

CVSS severity5.5
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext cookie storage in Pepperl+Fuchs WirelessHART-Gateway 3.0.9 allows local users to read gateway credentials through a stolen cookie. The gateway stores sensitive authentication data in a browser-accessible cookie without confidentiality protection. Exploitation requires access to the user's application or browser, a separate means to steal the cookie, and user interaction; the resulting impact is credential disclosure only.

The record

CVE
CVE-2021-34564
Published
Aug 31, 2021
Updated
Sep 17, 2024
Vendor
Pepperl+Fuchs
Product
WHA-GW-F2D2-0-AS-Z2-ETH.EIP
Classifications
CWE-315, T1539
Attack vector
local
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=3.0.9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Pepperl+Fuchs · WHA-GW-F2D2-0-AS-Z2-ETH.EIPversion=3.0.9
Pepperl+Fuchs · WHA-GW-F2D2-0-AS-Z2-ETHversion=3.0.9

Published CVSS scores

5.5CERT@VDECVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-315Cleartext Storage of Sensitive Information in a Cookie
T1539Steal Web Session Cookie

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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