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).
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.32%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.32% probability · 88th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- wago/pfc 200 firmware · wago/pfc 100 firmware
- Source
- talos-cna@cisco.com
References
- https://talosintelligence.com/vulnerability_reports/TALOS-2019-0871Exploit, Third Party Advisory
- https://talosintelligence.com/vulnerability_reports/TALOS-2019-0871Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.