CVE-2019-5158

Controller firmware downgrade via mismatched WUP metadata

Published Mar 10, 2020 · Updated Aug 4, 2024

Firmware downgrade in WAGO e!COCKPIT 1.6.1.5 allows attackers to install older controller firmware via a crafted WUP file. The updater trusts Revision and ReleaseIndex values in package-info.xml instead of verifying that they match the signed firmware payload, so an older image is displayed as newer. An authorized user must select the malicious WUP file and initiate the update, after which known flaws in the downgraded controller firmware become reachable.

CVSS severity8.6
High
EPSS probability1.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Firmware downgrade in WAGO e!COCKPIT 1.6.1.5 allows attackers to install older controller firmware via a crafted WUP file. The updater trusts Revision and ReleaseIndex values in package-info.xml instead of verifying that they match the signed firmware payload, so an older image is displayed as newer. An authorized user must select the malicious WUP file and initiate the update, after which known flaws in the downgraded controller firmware become reachable.

The record

CVE
CVE-2019-5158
Published
Mar 10, 2020
Updated
Aug 4, 2024
Vendor
WAGO
Product
e!COCKPIT
Classifications
CWE-20, CWE-798, T1204.002, T1601.002
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=1.6.1.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

WAGO · e!COCKPITversion=1.6.1.5

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
4.3NIST NVDAV:N/AC:M/Au:N/C:P/I:N/A:N
8.6Cisco TalosCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

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 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-20Improper Input Validation
CWE-798Use of Hard-coded Credentials
T1204.002Malicious File
T1601.002Downgrade System Image

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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