CVE-2019-5079

moderate-risk
Published 2019-12-18

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

Do I need to act?

~
1.1% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (3)

Pfc 200 Firmware
Pfc 200 Firmware
Pfc 100 Firmware

Affected Vendors

Wago

References (2)

Exploit https://talosintelligence.com/vulnerability_reports/TALOS-2019-0871
Exploit https://talosintelligence.com/vulnerability_reports/TALOS-2019-0871
44
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 3/34 · Minimal
Exposure 9/34 · Low