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Vulnerability record · CVE-2019-12256 · published 9 August 2019

CVE-2019-12256: Windriver vxworks classic buffer overflow vulnerability

Windriver · Vxworks

Wind River VxWorks 6.9 and vx7 has a Buffer Overflow in the IPv4 component. There is an IPNET security vulnerability: Stack overflow in the parsing of IPv4 packets’ IP options.

9.8 CVSS 3.1 Critical EPSS 27% · top 2.0% CWE-120 · Classic buffer overflow
9.8CVSS 3.1 base score, v2 7.5
27%EPSS exploitation probability, 30 days
NoNot in CISA KEV
12Affected product versions listed by NVD
18References
17 Jun 2026Last modified by NVD

Description

Wind River VxWorks 6.9 and vx7 has a Buffer Overflow in the IPv4 component. There is an IPNET security vulnerability: Stack overflow in the parsing of IPv4 packets’ IP options.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

12 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cert-portal.siemens.com/productcert/pdf/ssa-189842.pdf Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-352504.pdf Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-632562.pdf Third Party Advisory
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0009 Third Party Advisory
https://security.netapp.com/advisory/ntap-20190802-0001/ Third Party Advisory
https://support.f5.com/csp/article/K41190253 Third Party Advisory
https://support2.windriver.com/index.php?page=cve&on=view&id=CVE-2019-12256 Vendor Advisory
https://support2.windriver.com/index.php?page=security-notices Issue TrackingVendor Advisory
https://www.windriver.com/security/announcements/tcp-ip-network-stack-ipnet-urgent11/ Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-189842.pdf Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-352504.pdf Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-632562.pdf Third Party Advisory
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0009 Third Party Advisory
https://security.netapp.com/advisory/ntap-20190802-0001/ Third Party Advisory
https://support.f5.com/csp/article/K41190253 Third Party Advisory
https://support2.windriver.com/index.php?page=cve&on=view&id=CVE-2019-12256 Vendor Advisory
https://support2.windriver.com/index.php?page=security-notices Issue TrackingVendor Advisory
https://www.windriver.com/security/announcements/tcp-ip-network-stack-ipnet-urgent11/ Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-12256), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.