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CVE-2019-5074

CRITICAL
9.8
CVSS Score
Published: December 18, 2019 at 07:30 PM UTC
Updated: June 17, 2026 at 02:37 AM UTC
4 products affected across 1 vendorPFC200 FirmwarePFC100 FirmwarePfc 200

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Severity
CRITICAL9.8
Exploit prediction
EPSS 3%

Description

An exploitable stack buffer overflow vulnerability exists in the iocheckd service ''I/O-Check'' functionality of WAGO PFC200 Firmware version 03.01.07(13), WAGO PFC200 Firmware version 03.00.39(12) and WAGO PFC100 Firmware version 03.00.39(12). A specially crafted set of packets can cause a stack buffer overflow, resulting in code execution. An attacker can send unauthenticated packets to trigger this vulnerability.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

PFC100 Firmware· WAGO
95%
3.00.39(12)
wago-pfc-100 (same device)
PFC200 Firmware· WAGO
95%
3.00.39(12)3.01.07(13)
wago-pfc-200 (same device)
Pfc 100· WAGOdevice
80%
All versions
Pfc 200· WAGOdevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0863

CVSS

9.8CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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