CVE-2019-12255Wind River VxWorks has a Buffer Overflow in the TCP component (issue 1 of 4). This is a IPNET security vulnerability: TCP Urgent Pointer =…
- 9.8CriticalCVSS base score
- 75.3%Exploitation in 30 daysEPSS · top 0.5% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it.
Show the exploits1
Exploit-DB1 entry
- VxWorks 6.8 - TCP Urgent Pointer = 0 Integer Underflow (Exploit-DB entry) (opens in a new tab)
EDB-ID 47233dos, vxworkspublished 12 Aug 2019Not verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 3 months later
· 3 months later
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 75.3% · top 0.5% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
n/a
- affected n/a
References
References11
- https://support2.windriver.com/index.php?page=security-notices (opens in a new tab)x_refsource_MISCx_transferred
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0009 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://cert-portal.siemens.com/productcert/pdf/ssa-632562.pdf (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://security.netapp.com/advisory/ntap-20190802-0001/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.windriver.com/security/announcements/tcp-ip-network-stack-ipnet-urgent11/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support2.windriver.com/index.php?page=cve&on=view&id=CVE-2019-12255 (opens in a new tab)x_refsource_MISCx_transferred
- http://packetstormsecurity.com/files/154022/VxWorks-6.8-Integer-Underflow.html (opens in a new tab)x_refsource_MISCx_transferred
- https://support.f5.com/csp/article/K41190253 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://cert-portal.siemens.com/productcert/pdf/ssa-189842.pdf (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.f5.com/csp/article/K41190253?utm_source=f5support&%3Butm_medium=RSS (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://cert-portal.siemens.com/productcert/pdf/ssa-352504.pdf (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2019-3897 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2019-12255)Record last updated .