CVE-2019-12255

Name: CVE-2019-12255
Creator: NVD / NIST
Published: 2019-08-09T20:15:11.347+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 75.25%

Last modified Jun 17, 2026

CVE-2019-12255 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 75.25% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

75.25%

99.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Windriver	Vxworks	>= 6.5, < 6.9.4
Netapp	E-Series Santricity Os Controller	>= 8.00, <= 8.40.50.00
Sonicwall	Sonicos	>= 5.9.0.0, <= 5.9.0.7
Sonicwall	Sonicos	>= 5.9.1.0., <= 5.9.1.12
Sonicwall	Sonicos	>= 6.2.0.0, <= 6.2.3.1
Sonicwall	Sonicos	>= 6.2.4.0, <= 6.2.4.3
Sonicwall	Sonicos	>= 6.2.5.0, <= 6.2.5.3
Sonicwall	Sonicos	>= 6.2.6.0, <= 6.2.6.1
Sonicwall	Sonicos	>= 6.2.7.0, <= 6.2.7.4
Sonicwall	Sonicos	>= 6.2.9.0, <= 6.2.9.2
Sonicwall	Sonicos	>= 6.5.0.0, <= 6.5.0.3
Sonicwall	Sonicos	>= 6.5.1.0, <= 6.5.1.4
Sonicwall	Sonicos	>= 6.5.2.0, <= 6.5.2.3
Sonicwall	Sonicos	>= 6.5.3.0, <= 6.5.3.3
Sonicwall	Sonicos	>= 6.5.4.0., <= 6.5.4.3
Sonicwall	Sonicos	6.2.7.0
Sonicwall	Sonicos	6.2.7.1
Sonicwall	Sonicos	6.2.7.7
Siemens	Siprotec 5 Firmware	< 7.91
Siemens	Siprotec 5 Firmware	All versions
Siemens	Power Meter 9410 Firmware	< 2.2.1
Siemens	Power Meter 9810 Firmware	All versions
Siemens	Ruggedcom Win7000 Firmware	< bs5.2.461.17
Siemens	Ruggedcom Win7018 Firmware	< bs5.2.461.17
Siemens	Ruggedcom Win7025 Firmware	< bs5.2.461.17
Siemens	Ruggedcom Win7200 Firmware	< bs5.2.461.17
Belden	Hirschmann Hios	<= 07.0.07
Belden	Hirschmann Hios	<= 07.5.01
Belden	Hirschmann Hios	<= 07.2.04
Belden	Hirschmann Hios	<= 05.3.06
Belden	Garrettcom Magnum Dx940e Firmware	<= 1.0.1_y7

References

http://packetstormsecurity.com/files/154022/VxWorks-6.8-Integer-Underflow.htmlExploit, Third Party Advisory, VDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-189842.pdfThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-352504.pdfThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-632562.pdfThird Party Advisory
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0009Third Party Advisory
https://security.netapp.com/advisory/ntap-20190802-0001/Third Party Advisory
https://support.f5.com/csp/article/K41190253Third Party Advisory
https://support.f5.com/csp/article/K41190253?utm_source=f5support&amp%3Butm_medium=RSS
https://support2.windriver.com/index.php?page=cve&on=view&id=CVE-2019-12255Vendor Advisory
https://support2.windriver.com/index.php?page=security-noticesIssue Tracking, Vendor Advisory
https://www.windriver.com/security/announcements/tcp-ip-network-stack-ipnet-urgent11/Vendor Advisory
http://packetstormsecurity.com/files/154022/VxWorks-6.8-Integer-Underflow.htmlExploit, Third Party Advisory, VDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-189842.pdfThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-352504.pdfThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-632562.pdfThird Party Advisory
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0009Third Party Advisory
https://security.netapp.com/advisory/ntap-20190802-0001/Third Party Advisory
https://support.f5.com/csp/article/K41190253Third Party Advisory
https://support.f5.com/csp/article/K41190253?utm_source=f5support&amp%3Butm_medium=RSS
https://support2.windriver.com/index.php?page=cve&on=view&id=CVE-2019-12255Vendor Advisory
https://support2.windriver.com/index.php?page=security-noticesIssue Tracking, Vendor Advisory
https://www.windriver.com/security/announcements/tcp-ip-network-stack-ipnet-urgent11/Vendor Advisory

Timeline

Published: Aug 9, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-12255?

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.

How severe is CVE-2019-12255?

CVE-2019-12255 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 75.25% probability of exploitation in the next 30 days.

How do I fix CVE-2019-12255?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-12255?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST