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CVE-2026-54210 – Unauthenticated Buffer Overflow (DoS / potential RCE) – Tobit TeamDavid Webbox thro

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Summary

CVE-2026-54210 is a critical buffer overflow (CWE-787, out-of-bounds write) in the Tobit Laboratories AG TeamDavid Webbox application through Rollout 524. An unauthenticated, network-based attacker can crash the server (denial of service) and potentially achieve remote code execution, giving it a critical CVSS v4.0 base score of 9.5.

Technical details

  • Root cause: Insufficient validation of the filename length in the file upload functionality, allowing an out-of-bounds write (buffer overflow).
  • Trigger conditions: Submitting a file upload request that contains an excessively long filename.
  • Attack vector: Network; no authentication and no user interaction required.
  • Impact: Server crash resulting in denial of service. Remote code execution is potentially possible if stack conditions are favorable or a stack canary is disclosed via another vulnerability, which could lead to full compromise of the server.

Affected software

  • Tobit Laboratories AG TeamDavid Webbox application through Rollout 524 (versions after Rollout 524 are unaffected).

Severity

  • CVSS v4.0 base score: 9.5 (Critical)
  • Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Mitigation and recommended actions

  • Immediate: Update TeamDavid to a Rollout later than 524, per the vendor release notes.
  • If no patch: Restrict network exposure of the Webbox application, place it behind authenticated access controls or a WAF, and filter or reject upload requests carrying abnormally long filenames.

References

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