CVE-2026-54211 TeamDavid: Buffer Overflow in multiple form data parameters
Authenticated attackers can trigger a buffer overflow in TeamDavid Webbox, causing denial of service or potential remote code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-54211?
CVE-2026-54211 is a critical memory corruption vulnerability in Tobit Laboratories AG TeamDavid, published on 7 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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 before Rollout 528.
Starting with Rollout 528 (June 30, 2026), the affected functionality is disabled by default and the vulnerabilities are therefore no longer exposed through this functionality.
Weakness: CWE-787
Which versions are affected by CVE-2026-54211?
How do I fix CVE-2026-54211?
No fix has been published for CVE-2026-54211 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-54211 being exploited?
There is no known exploitation of CVE-2026-54211 in the wild and no public exploit code.
Sources
Also known as GHSA-m98g-956p-4hxc.