CVE-2026-54212 TeamDavid: Buffer Overflow in JSON-parsing
Unauthenticated attackers can cause a buffer overflow via crafted JSON, leading to 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-2026-54212?
CVE-2026-54212 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 implements an API endpoint that is vulnerable to a buffer overflow condition. By submitting a specially crafted JSON body, such as one that is at least 8 characters long and begins with a number, an unauthenticated attacker can cause the server to 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 lead to remote code execution and 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-2026-54212?
How do I fix CVE-2026-54212?
No fix has been published for CVE-2026-54212 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-2026-54212 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54212 exists.
Sources
Also known as GHSA-3pfv-fvh9-ffrp.