CVE-2019-5166: wago pfc200_firmware Out-of-bounds Write
Vulnerability summary
CVE-2019-5166 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in wago pfc200_firmware. EPSS estimates a 0.82% chance of exploitation in the next 30 days, higher than 56.4% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 10-03-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
An exploitable stack buffer overflow vulnerability exists in the iocheckd service ‘I/O-Check’ functionality of WAGO PFC 200 version 03.02.02(14). A specially crafted XML cache file written to a specific location on the device can cause a stack buffer overflow, resulting in code execution. An attacker can send a specially crafted packet to trigger the parsing of this cache file.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
0.82%
Chance of exploitation in the next 30 days
Percentile
56%
Versus all other CVEs
30-day change
0.00 pp
From 0.82% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (talosintelligence.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Wago2 products
- pfc200_firmware03.02.02\(14\)
- wago pfc200 firmwareversion 03.02.02(14)
1 vendor · 2 products
References
1 links- talosintelligence.com/vulnerability_reports/TALOS-2019-0961X Refsource MISCExploitMitigationThird Party Advisory