CVE-2019-5106Public exploit

Password disclosure via hard-coded XOR key

Published Mar 10, 2020 · Updated Aug 4, 2024

Hard-coded key use in WAGO e!COCKPIT 1.5.1.1 allows man-in-the-middle attackers to recover login passwords from captured traffic. The authentication code XORs passwords with a fixed 32-byte key and reduces its four-byte challenge to a repeating one-byte perturbation. Access to traffic between the engineering workstation and CODESYS Gateway exposes credentials when a user logs in; no integrity or availability impact is established.

CVSS severity6.2
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hard-coded key use in WAGO e!COCKPIT 1.5.1.1 allows man-in-the-middle attackers to recover login passwords from captured traffic. The authentication code XORs passwords with a fixed 32-byte key and reduces its four-byte challenge to a repeating one-byte perturbation. Access to traffic between the engineering workstation and CODESYS Gateway exposes credentials when a user logs in; no integrity or availability impact is established.

The record

CVE
CVE-2019-5106
Published
Mar 10, 2020
Updated
Aug 4, 2024
Vendor
WAGO
Product
e!COCKPIT
Classifications
CWE-798, CWE-327, T1040
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 10, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=1.5.1.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

WAGO · e!COCKPITversion=1.5.1.1

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
6.2Cisco TalosCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
2.1NIST NVDAV:L/AC:L/Au:N/C:P/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
CWE-327Use of a Broken or Risky Cryptographic Algorithm
T1040Network Sniffing

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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