TeamDavid Webbox: 15 Vulnerabilities Including Critical Buffer Overflows Disclosed Together
A batch of fifteen vulnerabilities, including critical buffer overflows and arbitrary file writes, were disclosed in Tobit Laboratories AG's TeamDavid Webbox application on August 7, 2026.
Key findings
- Fifteen vulnerabilities disclosed in Tobit Laboratories AG's TeamDavid Webbox on August 7, 2026.
- Critical buffer overflow flaws (CVE-2026-54212, CVE-2026-54211, CVE-2026-54210) can lead to server crashes and denial of service.
- Arbitrary file write (CVE-2026-54208) and memory leak (CVE-2026-54203) vulnerabilities pose significant risks.
- Multiple vulnerabilities involve improper handling of user input, UNC paths, and redirects, enabling XSS, open redirects, and header injection.
- Affected versions include up to Rollout 524 for CVE-2026-54217; users should consult vendor advisories for full details.
On August 7, 2026, a batch of fifteen vulnerabilities was disclosed in Tobit Laboratories AG's TeamDavid Webbox application. The vulnerabilities, all disclosed on the same day, span a range of severity levels from Medium to Critical, with several critical buffer overflow and arbitrary file write flaws posing the most significant risk to users. These disclosures highlight potential weaknesses in how the Webbox application handles user input, file operations, and network requests.
Several critical vulnerabilities were identified, primarily related to buffer overflows. CVE-2026-54212, an API endpoint vulnerability, and CVE-2026-54210, concerning file upload functionalities, allow unauthenticated attackers to crash the server by submitting specially crafted data, leading to denial of service. Additionally, CVE-2026-54211, affecting the serverClient_close.html endpoint, allows authenticated attackers to trigger similar denial-of-service conditions through excessively long form data.
Beyond denial-of-service, critical arbitrary file write capabilities were also disclosed. CVE-2026-54208 allows an unauthenticated attacker to write attacker-controlled content to arbitrary files on the server, potentially leading to code execution or system compromise. Another critical vulnerability, CVE-2026-54203, presents a memory leak issue accessible via a specific URL, potentially exposing sensitive information through repeated requests.
Medium severity vulnerabilities include stored cross-site scripting (XSS) in CVE-2026-54217, where malicious JavaScript can be embedded in emails and triggered when accessed. Open redirect vulnerabilities, such as in CVE-2026-5415, allow attackers to redirect users to arbitrary third-party sites, often used for phishing. HTTP header injection flaws, detailed in CVE-2026-54214 and CVE-2026-54199, allow manipulation of Content-Type headers or redirect targets by exploiting URL parameters or request bodies.
Further medium-severity issues involve improper handling of UNC paths for network locations. CVE-2026-54207, CVE-2026-54206, and CVE-2026-54205 all describe functionalities (moving archives, sending messages, storing links) that accept UNC paths without validation, leading to outbound connection attempts to attacker-controlled SMB shares. Path traversal in archive creation (CVE-2026-54202) and local file inclusion in message sending (CVE-2026-54200) also present significant risks for authenticated users.
The batch also includes CVE-2026-12071, a medium-severity vulnerability where user-supplied input is used to construct redirect URLs, allowing manipulation of the redirect target.
The affected product is TeamDavid's Webbox application, with specific versions mentioned for some vulnerabilities, such as "through Rollout 524" for CVE-2026-54217. Users are advised to consult Tobit Laboratories AG's official advisories for specific patching information and affected version ranges.
These vulnerabilities collectively indicate a need for rigorous input validation and secure handling of network resources within the TeamDavid Webbox application. Users should prioritize updating to patched versions as soon as they become available and review their security configurations. The concentration of critical flaws, particularly buffer overflows and file write vulnerabilities, warrants immediate attention from administrators.