CVE-2026-54211

Tobit Laboratories AG TeamDavid's Webbox application’s endpoint “//serverClient_close.html” is vulnerable to a buffer overflow vulnerability in multiple form data parameters. By submitting excessively long values in these parameters, an authenticated attacker can trigger a server crash, resulting in denial of service. Depending on the stack state or if a stack canary can be disclosed through another vulnerability, this buffer overflow could potentially be exploited for remote code execution, leading to full compromise of the server. This issue affects TeamDavid through Rollout 524.

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Publisher and database URLs for this record (shown for attribution; reading stays in Bugflare).

• https://david.tobit.software/releasenotes
• https://labs.infoguard.ch/posts/22-cves-in-david-a-secure-m365-alternative/