---
title: "CVE-2019-12255: Wind River VxWorks has a Buffer Overflow… | CubePath"
description: "Wind River VxWorks has a Buffer Overflow in the TCP component (issue 1 of 4). This is a IPNET security vulnerability: TCP Urgent Pointer = 0 that leads…"
language: en
source: https://cubepath.com/security/cve/CVE-2019-12255
---

# CVE-2019-12255: Wind River VxWorks has a Buffer Overflow… | CubePath

## Description

Wind River VxWorks has a Buffer Overflow in the TCP component (issue 1 of 4). This is a IPNET security vulnerability: TCP Urgent Pointer = 0 that leads to an integer underflow.

Official description from the CVE record, published by mitre. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2019-12255)

## Key data

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.75250 (75.3% probability)

Percentile

99.5%

Scores of

Nov 10, 2026

Model

v2026.06.15

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [support2.windriver.com/index.php?page=security-notices](https://support2.windriver.com/index.php?page=security-notices)
- [psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0009](https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0009)
- [cert-portal.siemens.com/productcert/pdf/ssa-632562.pdf](https://cert-portal.siemens.com/productcert/pdf/ssa-632562.pdf)
- [security.netapp.com/advisory/ntap-20190802-0001](https://security.netapp.com/advisory/ntap-20190802-0001/)
- [windriver.com/security/announcements/tcp-ip-network-stack-i…](https://www.windriver.com/security/announcements/tcp-ip-network-stack-ipnet-urgent11/)
- [support2.windriver.com/index.php?page=cve&on=view&id=CVE-20…](https://support2.windriver.com/index.php?page=cve&on=view&id=CVE-2019-12255)
- [packetstormsecurity.com/files/154022/VxWorks-6.8-Integer-Un…](http://packetstormsecurity.com/files/154022/VxWorks-6.8-Integer-Underflow.html)
- [support.f5.com/csp/article/K41190253](https://support.f5.com/csp/article/K41190253)
- [cert-portal.siemens.com/productcert/pdf/ssa-189842.pdf](https://cert-portal.siemens.com/productcert/pdf/ssa-189842.pdf)
- [support.f5.com/csp/article/K41190253?utm\_source=f5support&a…](https://support.f5.com/csp/article/K41190253?utm%5Fsource=f5support&amp%3Butm%5Fmedium=RSS)
- [cert-portal.siemens.com/productcert/pdf/ssa-352504.pdf](https://cert-portal.siemens.com/productcert/pdf/ssa-352504.pdf)

## Timeline

1. ID reserved May 21, 2019
2. Record published Aug 9, 2019
3. Record last updated Aug 4, 2024

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:01 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)