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CVE-2019-12257

74
FAUCET Score

CVE-2019-12257 is a critical heap overflow vulnerability in the DHCP client component of Wind River VxWorks versions 6.6 through 6.9, impacting products from vendors like Belden, NetApp, Siemens, and SonicWall. With a CVSS score of 8.8 (High), this vulnerability allows an unauthenticated attacker on the adjacent network to achieve high confidentiality, integrity, and availability impacts with low attack complexity. While not listed in CISA's KEV catalog and lacking public exploit code in Metasploit or ExploitDB, it has garnered significant community discussion and media coverage, indicating high awareness of its potential impact.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.5, < 6.9.4CPE matchmatch criteria
cpe:2.3:o:windriver:vxworks:*:*:*:*:*:*:*:*
>= 5.9.0.0, <= 5.9.0.7CPE matchmatch criteria
cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
>= 5.9.1.0., <= 5.9.1.12CPE matchmatch criteria
cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
>= 6.2.0.0, <= 6.2.3.1CPE matchmatch criteria
cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
>= 6.2.4.0, <= 6.2.4.3CPE matchmatch criteria
cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
84.18%
Probability of exploitation in next 30 days
EPSS Percentile
99.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.8418 is in the 99th percentile among its peer group of 1,859 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (5)

amazonvendor investigatingvia llm_extracted
apollographqlvendor investigatingvia llm_extracted
dfinityvendor investigatingvia llm_extracted
fleetdmvendor investigatingvia llm_extracted
mathworksvendor investigatingvia llm_extracted

Vendor Advisories (5)

fleetdmllm-fleetdm-0f75584f7881cc68CRITICAL

VxWorks security updates in Bosch Rexroth controllers

Aug 8, 2019
amazonllm-amazon-01c9c557159e0eaaCRITICAL

VxWorks security updates in Bosch Rexroth controllers

Aug 8, 2019
apollographqlllm-apollographql-006354509ddb08deCRITICAL

VxWorks security updates in Bosch Rexroth controllers

Aug 8, 2019
dfinityllm-dfinity-d304421499ee3499CRITICAL

VxWorks security updates in Bosch Rexroth controllers

Aug 8, 2019
mathworksllm-mathworks-c05d1a0f3ad97633CRITICAL

VxWorks security updates in Bosch Rexroth controllers

Aug 8, 2019

References

cert-portal.siemens.com / productcert/pdf/ssa-189842.pdf
Third Party Advisory
cert-portal.siemens.com / productcert/pdf/ssa-632562.pdf
Third Party Advisory
psirt.global.sonicwall.com / vuln-detail/SNWLID-2019-0009
Third Party Advisory
security.netapp.com / advisory/ntap-20190802-0001
Third Party Advisory
support2.windriver.com / index.php
Vendor Advisory
support2.windriver.com / index.php
Issue TrackingVendor Advisory
support.f5.com / csp/article/K41190253
Third Party Advisory
windriver.com / security/announcements/tcp-ip-network-stack-ipnet-urgent11
Vendor Advisory