ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2019-12258

Wind River VxWorks 6.6 through vx7 has Session Fixation in the TCP component.

Published Aug 9, 2019 · catalog updated Jun 17, 2026 · Wind River VxWorks 6.6

Last checked Nov 3, 2026. A connected source was read within the last 7 days.

Check this week

CVE-2019-12258 is not in CISA KEV. FIRST estimates a 22.95% chance of exploitation in the next 30 days. Check whether you run Wind River VxWorks 6.6.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Wind River VxWorks 6.6).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
22.95%
Remediation
Version ranges on file
Affected products
cpe sonicwall/sonicos · cpe windriver/vxworks

Wind River VxWorks 6.6 through vx7 has Session Fixation in the TCP component. This is a IPNET security vulnerability: DoS of TCP connection via malformed TCP options.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe sonicwall/sonicos>= 5.9.0.0, <= 5.9.0.7
  • cpe sonicwall/sonicos>= 5.9.1.0., <= 5.9.1.12
  • cpe sonicwall/sonicos>= 6.2.0.0, <= 6.2.3.1
  • cpe sonicwall/sonicos>= 6.2.4.0, <= 6.2.4.3
  • cpe windriver/vxworks7.0
  • cpe windriver/vxworks< 6.9.4.12

How to fix CVE-2019-12258

  • Upgrade

    CVE-2019-12258 lists a fix boundary at 5.9.0.7. Compare the installed build with that boundary before you change production.

  • Version check

    Affected <= 5.9.0.7

  • Advisory

    Open the inventory_critical record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2019-12258 is not in CISA KEV. FIRST estimates a 22.95% chance of exploitation in the next 30 days. Check whether you run Wind River VxWorks 6.6.

Which versions are affected?

Compare what you have installed with >= 5.9.0.0, <= 5.9.0.7, >= 5.9.1.0., <= 5.9.1.12, >= 6.2.0.0, <= 6.2.3.1, >= 6.2.4.0, <= 6.2.4.3, 7.0, < 6.9.4.12. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-384. EPSS 22.95%. There is no CISA KEV listing. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Technology hubs

SonicWall SonicOS security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 9, 2019 · Monitored products — critical

    Detected

    Wind River VxWorks 6.6 through vx7 has Session Fixation in the TCP component. This is a IPNET security vulnerability: DoS of TCP connection via malformed TCP options.

  2. Jun 17, 2026 · Monitored products — critical

    Updated

    Wind River VxWorks 6.6 through vx7 has Session Fixation in the TCP component. This is a IPNET security vulnerability: DoS of TCP connection via malformed TCP options.

Sources

  • Monitored products — criticalVendor advisoryCVE-2019-12258

    Wind River VxWorks 6.6 through vx7 has Session Fixation in the TCP component. This is a IPNET security vulnerability: DoS of TCP connection via malformed TCP options.

    nvd.nist.gov
  • Metasploit ModulesPublic exploit moduleauxiliary_scanner/vxworks/urgent11_check

    Public module reference (normal). Module source is not copied into this catalog.

    rapid7.com

References

Freshness

Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Metasploit ModulesNov 3, 2026
  • Monitored products — criticalNov 2, 2026