CVE-2026-54212 in TeamDavid
Summary
by MITRE • 08/07/2026
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 through Rollout 524.
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Analysis
by VulDB Data Team • 08/07/2026
The vulnerability in TeamDavid's Webbox application represents a critical buffer overflow condition within an API endpoint that undermines system stability and security posture. This flaw exists in the application's handling of JSON payloads submitted to specific API endpoints, where the software fails to properly validate or constrain input lengths before processing. The vulnerability manifests when attackers submit crafted JSON bodies that meet specific criteria, including being at least eight characters long and beginning with a numeric value, which triggers the exploitable condition.
The technical implementation of this buffer overflow stems from insufficient bounds checking in the application's input processing logic. When the system receives a JSON payload that satisfies the triggering conditions, it attempts to copy or process the data into a fixed-size buffer without adequate validation mechanisms. This fundamental flaw allows attackers to exceed the allocated memory space and overwrite adjacent memory locations, potentially corrupting program execution flow. The vulnerability operates at the application layer and requires no authentication credentials to exploit, making it particularly dangerous as it can be leveraged by unauthenticated attackers.
The operational impact of this vulnerability extends beyond simple denial of service conditions, presenting significant risks to system availability and data integrity. While the immediate effect results in server crashes and service disruption, the potential for remote code execution cannot be dismissed, especially when considering that stack canaries might be bypassed through additional vulnerabilities or by exploiting the memory corruption patterns. The severity classification aligns with common vulnerability scoring systems where such buffer overflows can result in complete system compromise, particularly in environments where the application runs with elevated privileges.
Security professionals should recognize this vulnerability pattern as consistent with CWE-121 stack-based buffer overflow conditions that fall under the broader category of memory safety issues within software applications. The attack surface for this vulnerability aligns with ATT&CK technique T1499.004 for network denial of service, while also representing potential paths for privilege escalation and persistence if exploitation leads to code execution. Organizations should prioritize immediate patching of affected versions through Rollout 524 and implement input validation controls that enforce strict size limitations on JSON payload processing.
Mitigation strategies should include comprehensive code review processes focusing on memory management practices and implementation of modern buffer overflow protection mechanisms such as stack canaries, address space layout randomization, and non-executable stack protections. Application firewalls or web application firewalls should be configured to monitor and filter suspicious JSON payload patterns that match the vulnerability characteristics. Additionally, regular security assessments and penetration testing should be conducted to identify similar memory corruption vulnerabilities across the application ecosystem, particularly in areas where user input is processed without proper sanitization or validation controls. The vulnerability demonstrates the importance of defensive programming practices and adherence to secure coding guidelines that prevent buffer overflows through proper bounds checking and input validation mechanisms.