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CVE-2024-27944 Siemens CVE debrief

CVE-2024-27944 is a HIGH severity vulnerability (CVSS 7.2) in Siemens RUGGEDCOM CROSSBOW, published on 2024-05-14. The vulnerability allows a privileged user to upload firmware files to the root installation directory of the system. By replacing specific files, an attacker could tamper with system files or achieve remote code execution. The attack vector is network-based with low attack complexity, requiring high privileges but no user interaction. Siemens has released a vendor fix: update to V5.5 or later version. This vulnerability is not listed in CISA's Known Exploited Vulnerabilities (KEV) catalog.

Vendor
Siemens
Product
RUGGEDCOM CROSSBOW
CVSS
HIGH 7.2
CISA KEV
Not listed in stored evidence
Original CVE published
2024-05-14
Original CVE updated
2024-05-14
Advisory published
2024-05-14
Advisory updated
2024-05-14

Who should care

Organizations operating Siemens RUGGEDCOM CROSSBOW in industrial control system (ICS/OT) environments, particularly those with multiple privileged users or remote management capabilities. Critical infrastructure operators in energy, transportation, and manufacturing sectors using this product should prioritize patching.

Technical summary

The affected systems allow a privileged user to upload firmware files to the root installation directory. An attacker with high privileges can replace specific files to tamper with system files or achieve remote code execution. The vulnerability has network attack vector, low complexity, and high impact on confidentiality, integrity, and availability.

Defensive priority

HIGH

Recommended defensive actions

  • Update Siemens RUGGEDCOM CROSSBOW to V5.5 or later version per vendor guidance
  • Restrict and monitor privileged user accounts with firmware upload capabilities
  • Implement network segmentation for ICS/OT environments hosting RUGGEDCOM CROSSBOW systems
  • Apply defense-in-depth strategies per CISA ICS recommended practices
  • Review and validate firmware integrity before deployment to affected systems

Evidence notes

CVE published 2024-05-14. CVSS 3.1 vector: AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C. Affected product: Siemens RUGGEDCOM CROSSBOW. Remediation: Update to V5.5 or later. Source: CISA CSAF advisory ICSA-24-137-10, cross-referenced with Siemens SSA-916916.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-27944 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-27944

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

  • CVE-2024-27944 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-27944

    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/2024/icsa-24-137-10.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-916916.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-916916.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/pdf/ssa-916916.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/txt/ssa-916916.txt

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-24-137-10

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/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

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.