What’s Vulnerable › Vulnerabilities
CVE-2019-12255
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 75.3% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2019-08-09 · updated 2026-06-17
- Weakness: CWE-120
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.
Affected products
- Belden Garrettcom Magnum Dx940E Firmware: through 1.0.1_y7
- Belden Hirschmann HiOS: through 07.0.07; through 07.5.01; through 07.2.04; through 05.3.06
- E-Series SANtricity OS Controller Software 11.x: from 8.00 through 8.40.50.00
- Siemens Power Meter 9410 Firmware: before 2.2.1 — fixed in 2.2.1
- Siemens Power Meter 9810 Firmware: all versions
- Siemens Ruggedcom Win7000 Firmware: before bs5.2.461.17 — fixed in bs5.2.461.17
- Siemens Ruggedcom Win7018 Firmware: before bs5.2.461.17 — fixed in bs5.2.461.17
- Siemens Ruggedcom Win7025 Firmware: before bs5.2.461.17 — fixed in bs5.2.461.17
- Siemens Ruggedcom Win7200 Firmware: before bs5.2.461.17 — fixed in bs5.2.461.17
- Siemens Siprotec 5 Firmware: before 7.91 — fixed in 7.91
- SonicWall SonicOS: from 5.9.0.0 through 5.9.0.7; from 5.9.1.0. through 5.9.1.12; from 6.2.0.0 through 6.2.3.1; from 6.2.4.0 through 6.2.4.3; from 6.2.5.0 through 6.2.5.3; from 6.2.6.0 through 6.2.6.1
- Windriver Vxworks: from 6.5 before 6.9.4 — fixed in 6.9.4
How to fix
Upgrade to a fixed version: Siemens Power Meter 9410 Firmware 2.2.1; 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; Siemens Siprotec 5 Firmware 7.91; Windriver Vxworks 6.9.4. Check the vendor advisory for mitigations.
References
- http://packetstormsecurity.com/files/154022/VxWorks-6.8-Integer-Underflow.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-189842.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-352504.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-632562.pdf
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0009
- https://security.netapp.com/advisory/ntap-20190802-0001/
- https://support.f5.com/csp/article/K41190253
- https://support.f5.com/csp/article/K41190253?utm_source=f5support&%3Butm_medium=RSS
- https://support2.windriver.com/index.php?page=cve&on=view&id=CVE-2019-12255
- https://support2.windriver.com/index.php?page=security-notices
- https://www.windriver.com/security/announcements/tcp-ip-network-stack-ipnet-urgent11/
- http://packetstormsecurity.com/files/154022/VxWorks-6.8-Integer-Underflow.html
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