What is CVE-2019-5079?

CVE-2019-5079 is a critical-severity vulnerability in Wago Pfc_100, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2019-12-18.

How severe is CVE-2019-5079?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Wago Pfc_100

CVE-2019-5079

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 s…

Vulnerability class: Buffer Overflow

EPSS: 0.033 (87.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Wago Pfc_100
Wago Pfc_100_firmware — versions 03.00.39\(12\)
Wago Pfc_200
Wago Pfc_200_firmware — versions 03.00.39\(12\), 03.01.07\(13\)
N/a Wago Pfc100 — versions Firmware version 03.00.39(12)
N/a Wago Pfc200 — versions Firmware version 03.01.07(13), Firmware version 03.00.39(12)

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

talos-cna@cisco.com (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2019-5079?: CVE-2019-5079 is a critical-severity vulnerability in Wago Pfc_100, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2019-12-18.
How severe is CVE-2019-5079?: Critical severity. CVSS v3 base score is 9.8 out of 10.