CVE-2019-12257

Wind River VxWorks 6.9 and vx7 has a Buffer Overflow in the DHCP client component. There is an...

8.8 High

Wind River VxWorks 6.6 through 6.9 has a Buffer Overflow in the DHCP client component. There is an IPNET security vulnerability: Heap overflow in DHCP Offer/ACK parsing inside ipdhcpc.

Attack profile

How easy it is to exploit

Attack vector: Adjacent network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

84.3%Up 82.4 points since Apr 14, 2021

What each source reports

NVD Score used 8.8

Wind River VxWorks 6.6 through 6.9 has a Buffer Overflow in the DHCP client component. There is an IPNET security vulnerability: Heap overflow in DHCP Offer/ACK parsing inside ipdhcpc.

Record: CVE-2019-12257
CVSS 3.1: 8.8 HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 5.8 MediumAV:A/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-120
Updated: 2026-11-02

CVE List No score

Wind River VxWorks 6.6 through 6.9 has a Buffer Overflow in the DHCP client component. There is an IPNET security vulnerability: Heap overflow in DHCP Offer/ACK parsing inside ipdhcpc.

Record: CVE-2019-12257
Updated: 2026-11-02

EUVDEUVD-2019-3899 No score

Wind River VxWorks 6.6 through 6.9 has a Buffer Overflow in the DHCP client component. There is an IPNET security vulnerability: Heap overflow in DHCP Offer/ACK parsing inside ipdhcpc.

Record: EUVD-2019-3899
Updated: 2026-11-03

GitHub AdvisoriesGHSA-qhhx-3278-fj99 8.8

Wind River VxWorks 6.9 and vx7 has a Buffer Overflow in the DHCP client component. There is an...

Wind River VxWorks 6.9 and vx7 has a Buffer Overflow in the DHCP client component. There is an IPNET security vulnerability: Heap overflow in DHCP Offer/ACK parsing inside ipdhcpc.

Record: GHSA-qhhx-3278-fj99
CVSS 3.1: 8.8 HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-120
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-12257 is a high vulnerability (CVSS 8.8) in Windriver Vxworks, published August 9, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 84.3%, the 99th percentile. No source names a fixed version.

References

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