CVE-2026-54212

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.

CVSS

No CVSS.

References

Link	Resource
https://chayns.net/77892-10814/tapp/763210?postId=11454
https://labs.infoguard.ch/posts/22-cves-in-david-a-secure-m365-alternative/

Configurations

No configuration.

History

23 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) La aplicación Webbox de TeamDavid de Tobit Laboratories AG implementa un endpoint de API que es vulnerable a una condición de desbordamiento de búfer. Al enviar un cuerpo JSON especialmente diseñado, como uno que tenga al menos 8 caracteres de largo y comience con un número, un atacante no autenticado puede hacer que el servidor se bloquee, lo que resulta en denegación de servicio. Dependiendo del estado de la pila o si un canario de pila puede ser revelado a través de otra vulnerabilidad, este desbordamiento de búfer podría potencialmente conducir a la ejecución remota de código y al compromiso total del servidor. Este problema afecta a TeamDavid hasta el Rollout 524.

Information

Published : 2026-08-07 10:16

Updated : 2026-10-24 16:10

NVD link : CVE-2026-54212

Mitre link : CVE-2026-54212

CVE.ORG link : CVE-2026-54212

JSON object : View

Products Affected

No product.

CWE

CWE-787

Out-of-bounds Write

{"id": "CVE-2026-54212", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-54212", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-08-07T14:38:05.213025Z"}}], "cvssMetricV40": [{"type": "Secondary", "source": "vulnerability@ncsc.ch", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 9.5, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "HIGH", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "vulnerability@ncsc.ch", "affectedData": [{"vendor": "Tobit Laboratories AG", "modules": ["Webbox"], "product": "TeamDavid", "versions": [{"status": "affected", "version": "0", "lessThan": "Rollout 528", "versionType": "custom"}], "defaultStatus": "unaffected"}]}], "published": "2026-08-07T10:16:58.353", "references": [{"url": "https://chayns.net/77892-10814/tapp/763210?postId=11454", "source": "vulnerability@ncsc.ch"}, {"url": "https://labs.infoguard.ch/posts/22-cves-in-david-a-secure-m365-alternative/", "source": "vulnerability@ncsc.ch"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "vulnerability@ncsc.ch", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "Tobit Laboratories AG TeamDavid's Webbox application implements an API endpoint that is vulnerable to a \nbuffer overflow condition. By submitting a specially crafted JSON body, \nsuch as one that is at least 8 characters long and begins with a number,\n an unauthenticated attacker can cause the server to crash, resulting in\n denial of service. Depending on the stack state or if a stack canary \ncan be disclosed through another vulnerability, this buffer overflow \ncould potentially lead to remote code execution and full compromise of \nthe server.\u00a0This issue affects TeamDavid before Rollout 528.\n\nStarting with Rollout 528 (June 30, 2026), the affected functionality is disabled by default and the vulnerabilities are therefore no longer exposed through this functionality."}, {"lang": "es", "value": "La aplicaci\u00f3n Webbox de TeamDavid de Tobit Laboratories AG implementa un endpoint de API que es vulnerable a una condici\u00f3n de desbordamiento de b\u00fafer. Al enviar un cuerpo JSON especialmente dise\u00f1ado, como uno que tenga al menos 8 caracteres de largo y comience con un n\u00famero, un atacante no autenticado puede hacer que el servidor se bloquee, lo que resulta en denegaci\u00f3n de servicio. Dependiendo del estado de la pila o si un canario de pila puede ser revelado a trav\u00e9s de otra vulnerabilidad, este desbordamiento de b\u00fafer podr\u00eda potencialmente conducir a la ejecuci\u00f3n remota de c\u00f3digo y al compromiso total del servidor. Este problema afecta a TeamDavid hasta el Rollout 524."}], "lastModified": "2026-10-24T16:10:00.153", "sourceIdentifier": "vulnerability@ncsc.ch"}