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CVE-2019-12263

27
FAUCET Score

CVE-2019-12263 describes a high-severity buffer overflow vulnerability in the TCP component of Wind River VxWorks 6.9.4 and vx7, affecting products from vendors like Belden, NetApp, Siemens, and SonicWall. This flaw, stemming from a race condition causing TCP Urgent Pointer state confusion, carries a CVSS score of 8.1, indicating a high potential for impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, suggesting awareness within the security community.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.5, < 6.9.4.12CPE matchmatch criteria
cpe:2.3:o:windriver:vxworks:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:windriver:vxworks:7.0:-:*:*:*:*:*:*
>= 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:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.17%
Probability of exploitation in next 30 days
EPSS Percentile
86.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0318 is in the 45th percentile among its peer group of 8,918 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 0.1 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-352504.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