CVE-2019-12255

critical

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.

References

https://support.f5.com/csp/article/K41190253

https://security.netapp.com/advisory/ntap-20190802-0001/

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0009

https://cert-portal.siemens.com/productcert/pdf/ssa-632562.pdf

https://cert-portal.siemens.com/productcert/pdf/ssa-352504.pdf

https://cert-portal.siemens.com/productcert/pdf/ssa-189842.pdf

https://www.tenable.com/blog/critical-vulnerabilities-dubbed-urgent11-place-devices-running-vxworks-at-risk-of-rce-attacks

https://github.com/sud0woodo/Urgent11-Suricata-LUA-scripts

https://www.windriver.com/security/announcements/tcp-ip-network-stack-ipnet-urgent11/

https://support2.windriver.com/index.php?page=security-notices

https://support2.windriver.com/index.php?page=cve&on=view&id=CVE-2019-12255

https://support.f5.com/csp/article/K41190253?utm_source=f5support&amp%3Butm_medium=RSS

http://packetstormsecurity.com/files/154022/VxWorks-6.8-Integer-Underflow.html

Details

Source: Mitre, NVD

Published: 2019-08-09

Updated: 2026-06-17

Named Vulnerability: URGENT/11

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

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

Severity: Critical

EPSS

EPSS: 0.7525

Detections

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