CVE-2019-5185Public exploit

Service crash via unbounded XML state formatting

Published Mar 23, 2020 · Updated Aug 4, 2024

Stack buffer overflow in iocheckd in WAGO PFC200 Firmware 03.02.02(14) allows local users to crash the service via a crafted XML cache file. The service formats the globally writable /tmp/iocheckCache.xml state node into a 512-byte stack buffer with unbounded sprintf, then strcpy reads past its missing terminator and faults. A local user must first place the file and send BC_SaveParameter; the resulting service interruption blocks factory restore and network-parameter changes.

CVSS severity7.0
High
EPSS probability0.85%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack buffer overflow in iocheckd in WAGO PFC200 Firmware 03.02.02(14) allows local users to crash the service via a crafted XML cache file. The service formats the globally writable /tmp/iocheckCache.xml state node into a 512-byte stack buffer with unbounded sprintf, then strcpy reads past its missing terminator and faults. A local user must first place the file and send BC_SaveParameter; the resulting service interruption blocks factory restore and network-parameter changes.

The record

CVE
CVE-2019-5185
Published
Mar 23, 2020
Updated
Aug 4, 2024
Vendor
WAGO
Product
WAGO PFC200 Firmware
Classifications
CWE-787, CWE-120, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 23, 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=WAGO PFC200 Firmware version 03.02.02(14)

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

WAGO · WAGO PFC200 Firmwareversion=WAGO PFC200 Firmware version 03.02.02(14)

Published CVSS scores

7.0NIST NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.0Cisco TalosCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
4.4NIST NVDAV:L/AC:M/Au:N/C:P/I:P/A:P

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1499.004Application or System Exploitation

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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