CVE-2019-12257

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.

Published: 2019-08-09 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-12257 is rated High Risk (75.1/100): CVSS High severity, with high exploitation likelihood (EPSS 84.18%, 100th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +59.96% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2019-12257

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 24.21% 84.18% +59.96%
2 2026-06-05 19.91% 24.21% +4.31%
3 2026-05-31 — 19.91% —

Full EPSS history (33 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-12257

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
5.8 2.0 MEDIUM
AV:A/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:A)
Requires access to an adjacent network segment.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 6.5 6.4 [email protected]

Weakness enumeration for CVE-2019-12257

Affected software / configurations for CVE-2019-12257

Vendor Product Version Raw CPE
windriver vxworks >= 6.5, < 6.9.4 cpe:2.3:o:windriver:vxworks:*:*:*:*:*:*:*:*
sonicwall sonicos >= 5.9.0.0, <= 5.9.0.7 cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
sonicwall sonicos >= 5.9.1.0., <= 5.9.1.12 cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
sonicwall sonicos >= 6.2.0.0, <= 6.2.3.1 cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
sonicwall sonicos >= 6.2.4.0, <= 6.2.4.3 cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
sonicwall sonicos >= 6.2.5.0, <= 6.2.5.3 cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
sonicwall sonicos >= 6.2.6.0, <= 6.2.6.1 cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
sonicwall sonicos >= 6.2.7.0, <= 6.2.7.4 cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
sonicwall sonicos >= 6.2.9.0, <= 6.2.9.2 cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
sonicwall sonicos >= 6.5.0.0, <= 6.5.0.3 cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
sonicwall sonicos >= 6.5.1.0, <= 6.5.1.4 cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
sonicwall sonicos >= 6.5.2.0, <= 6.5.2.3 cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
sonicwall sonicos >= 6.5.3.0, <= 6.5.3.3 cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
sonicwall sonicos >= 6.5.4.0., <= 6.5.4.3 cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
sonicwall sonicos 6.2.7.0 cpe:2.3:o:sonicwall:sonicos:6.2.7.0:*:*:*:*:*:*:*
sonicwall sonicos 6.2.7.1 cpe:2.3:o:sonicwall:sonicos:6.2.7.1:*:*:*:*:*:*:*
sonicwall sonicos 6.2.7.7 cpe:2.3:o:sonicwall:sonicos:6.2.7.7:*:*:*:*:*:*:*
siemens siprotec_5_firmware < 7.59 cpe:2.3:o:siemens:siprotec_5_firmware:*:*:*:*:*:*:*:cp200
netapp e-series_santricity_os_controller >= 8.00, <= 8.40.50.00 cpe:2.3:o:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:*
siemens siprotec_5_firmware < 7.91 cpe:2.3:o:siemens:siprotec_5_firmware:*:*:*:*:*:*:*:cp300
siemens ruggedcom_win7000_firmware < bs5.2.461.17 cpe:2.3:o:siemens:ruggedcom_win7000_firmware:*:*:*:*:*:*:*:*
siemens ruggedcom_win7018_firmware < bs5.2.461.17 cpe:2.3:o:siemens:ruggedcom_win7018_firmware:*:*:*:*:*:*:*:*
siemens ruggedcom_win7025_firmware < bs5.2.461.17 cpe:2.3:o:siemens:ruggedcom_win7025_firmware:*:*:*:*:*:*:*:*
siemens ruggedcom_win7200_firmware < bs5.2.461.17 cpe:2.3:o:siemens:ruggedcom_win7200_firmware:*:*:*:*:*:*:*:*
belden hirschmann_hios <= 07.0.07 cpe:2.3:o:belden:hirschmann_hios:*:*:*:*:*:*:*:*
belden hirschmann_hios <= 07.5.01 cpe:2.3:o:belden:hirschmann_hios:*:*:*:*:*:*:*:*
belden hirschmann_hios <= 07.2.04 cpe:2.3:o:belden:hirschmann_hios:*:*:*:*:*:*:*:*
belden hirschmann_hios <= 05.3.06 cpe:2.3:o:belden:hirschmann_hios:*:*:*:*:*:*:*:*
belden garrettcom_magnum_dx940e_firmware <= 1.0.1_y7 cpe:2.3:o:belden:garrettcom_magnum_dx940e_firmware:*:*:*:*:*:*:*:*

References for CVE-2019-12257

cvelogic Threat Intelligence