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Vulnerability record · CVE-2019-12261 · published 9 August 2019

CVE-2019-12261: Windriver vxworks classic buffer overflow vulnerability

Windriver · Vxworks

Wind River VxWorks 6.7 though 6.9 and vx7 has a Buffer Overflow in the TCP component (issue 3 of 4). This is an IPNET security vulnerability: TCP Urgent Pointer state confusion during connect() to a remote host.

9.8 CVSS 3.1 Critical EPSS 9.0% · top 4.9% CWE-120 · Classic buffer overflow
9.8CVSS 3.1 base score, v2 7.5
9.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
13Affected product versions listed by NVD
20References
17 Jun 2026Last modified by NVD

Description

Wind River VxWorks 6.7 though 6.9 and vx7 has a Buffer Overflow in the TCP component (issue 3 of 4). This is an IPNET security vulnerability: TCP Urgent Pointer state confusion during connect() to a remote host.

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

Affected products

13 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-2019-12261 Vendor Advisory
https://support2.windriver.com/index.php?page=security-notices Issue TrackingVendor Advisory
https://www.oracle.com/security-alerts/cpuoct2020.html Third Party 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-2019-12261 Vendor Advisory
https://support2.windriver.com/index.php?page=security-notices Issue TrackingVendor Advisory
https://www.oracle.com/security-alerts/cpuoct2020.html Third Party Advisory
https://www.windriver.com/security/announcements/tcp-ip-network-stack-ipnet-urgent11/ Vendor Advisory

Track CVE-2019-12261 inside VULONE

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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-2019-12261), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.