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PatchSiren cyber security CVE debrief

CVE-2019-14197 Siemens CVE debrief

CVE-2019-14197 is a high-severity memory-safety issue in Das U-Boot through 2019.07. NVD describes it as an out-of-bounds read in nfs_read_reply, with a CVSS 3.0 score of 9.1 (network-reachable, no privileges or user interaction, high confidentiality impact, and high availability impact). For organizations that use U-Boot in embedded devices—especially where NFS-based boot paths are enabled—this should be treated as urgent remediation work.

Vendor
Siemens
Product
RUGGEDCOM ROX MX5000
CVSS
CRITICAL 9.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-12
Original CVE updated
2026-05-14
Advisory published
2026-05-12
Advisory updated
2026-05-14

Who should care

Embedded device vendors, OEMs, firmware maintainers, and operators running U-Boot-based bootloaders should care most, especially if devices use NFS boot or other code paths that process NFS replies.

Technical summary

NVD lists CVE-2019-14197 as a CWE-125 out-of-bounds read affecting denx:u-boot through version 2019.07. The vulnerable path is nfs_read_reply, and the published CVSS vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H) indicates a remotely reachable issue with no authentication or user interaction required. The main security concern is unintended memory exposure, with possible availability impact in affected bootloader contexts.

Defensive priority

Critical

Recommended defensive actions

  • Inventory firmware and bootloader builds to find any U-Boot versions through 2019.07.
  • Prioritize devices that enable NFS boot or otherwise use the NFS reply parsing path.
  • Apply the vendor or upstream U-Boot fix, or upgrade to a release newer than the affected range.
  • If NFS boot is not required, disable or restrict it in firmware configuration.
  • Validate patched images in lab and production-like boot scenarios before broad rollout.
  • Coordinate with device vendors for model-specific remediation guidance if you do not directly control the bootloader build.

Evidence notes

The supplied corpus shows an official NVD record published on 2019-07-31 and last modified on 2026-05-12. NVD maps the affected product to cpe:2.3:a:denx:u-boot:* with versionEndIncluding 2019.07, and lists CWE-125. References in the corpus include a Semmle advisory, the upstream U-Boot GitLab repository, and a Siemens CERT notice; however, the specific contents of those pages were not provided here, so this debrief stays within the NVD-described facts.

Sources and references

Verified primary and authoritative sources

  • CVE-2019-14197 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2019-14197

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2019-14197 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2019-14197

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-134-16.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-577017.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-577017.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-26-134-16

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/topics/industrial-control-systems

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

    Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.