CVE-2019-12255
CriticalExploitedPublic exploitWind River VxWorks has a Buffer Overflow in the TCP component (issue 1 of 4).
Published Aug 9, 2019 · Updated Nov 21, 2024
Key Facts
Patch immediately- CVE-2019-12255 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Garrettcom Magnum Dx940e Firmware (Belden), Hirschmann Hios (Belden), E-Series Santricity OS Controller (Netapp) and 9 more products.
- It is exploited in the wild, listed in Industry KEV feed since Jun 10, 2025. Public exploit code is available.
- EPSS estimates a 75% probability of exploitation in the next 30 days.
- Fixed versions are available, including Garrettcom Magnum Dx940e Firmware <=1.0.1_y7, Hirschmann Hios <=07.0.07, E-Series Santricity OS Controller <=8.40.50.00.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
75%
Higher than 99.5% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2019-12255 brief as a PDF
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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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Jun 10, 2025 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
16 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Garrettcom Magnum Dx940e FirmwareBelden | See advisory | 1.0.1_y7 |
| Hirschmann HiosBelden | See advisory | 07.0.07 |
| E-Series Santricity OS ControllerNetapp | See advisory | 8.40.50.00 |
| Power Meter 9410 FirmwareSiemens | See advisory | 2.2.1 |
| Power Meter 9810 FirmwareSiemens | See advisory | n/a |
Patched Releases
Garrettcom Magnum Dx940e Firmware
<=1.0.1_y7
Hirschmann Hios
<=07.0.07
E-Series Santricity OS Controller
<=8.40.50.00
Power Meter 9410 Firmware
2.2.1
Ruggedcom Win7000 Firmware
bs5.2.461.17
Ruggedcom Win7018 Firmware
bs5.2.461.17
Ruggedcom Win7025 Firmware
bs5.2.461.17
Ruggedcom Win7200 Firmware
bs5.2.461.17
Siprotec 5 Firmware
7.91
Sonicos
<=5.9.0.7
Vxworks
6.9.4
Timeline
Publicly disclosed
Aug 9, 2019
Last updated
Nov 21, 2024
Added to Industry KEV feed
Jun 10, 2025
Weakness Type
- CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
References
- advisoryhttps://cert-portal.siemens.com/productcert/pdf/ssa-189842.pdf
- advisoryhttps://cert-portal.siemens.com/productcert/pdf/ssa-352504.pdf
- advisoryhttps://cert-portal.siemens.com/productcert/pdf/ssa-632562.pdf
- advisoryhttps://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0009
- advisoryhttps://security.netapp.com/advisory/ntap-20190802-0001/
FAQ
Common Questions.
Wind River VxWorks has a Buffer Overflow in the TCP component (issue 1 of 4).
Affected: Garrettcom Magnum Dx940e Firmware (Belden); Hirschmann Hios (Belden); E-Series Santricity OS Controller (Netapp), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Jun 10, 2025.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Garrettcom Magnum Dx940e Firmware <=1.0.1_y7, Hirschmann Hios <=07.0.07, E-Series Santricity OS Controller <=8.40.50.00.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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