CVE-2026-54212

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-54212", "assignerOrgId": "455daabc-a392-441d-aa46-37d35189897c", "state": "PUBLISHED", "assignerShortName": "NCSC.ch", "dateReserved": "2026-06-12T09:32:46.514Z", "datePublished": "2026-08-07T09:47:12.542Z", "dateUpdated": "2026-09-07T12:58:58.837Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "455daabc-a392-441d-aa46-37d35189897c", "shortName": "NCSC.ch", "dateUpdated": "2026-09-07T12:58:58.837Z"}, "title": "TeamDavid: Buffer Overflow in JSON-parsing", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-787", "description": "CWE-787 Out-of-bounds write", "type": "CWE"}]}], "affected": [{"vendor": "Tobit Laboratories AG", "product": "TeamDavid", "modules": ["Webbox"], "versions": [{"status": "affected", "version": "0", "lessThan": "Rollout 528", "versionType": "custom"}], "defaultStatus": "unaffected"}], "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.", "supportingMedia": [{"type": "text/html", "base64": false, "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.&nbsp;<div><div><span>This issue affects TeamDavid before Rollout 528.</span></div><div><span>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.</span></div></div>"}]}], "references": [{"url": "https://chayns.net/77892-10814/tapp/763210?postId=11454", "tags": ["release-notes"]}, {"url": "https://labs.infoguard.ch/posts/22-cves-in-david-a-secure-m365-alternative/", "tags": ["third-party-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "HIGH", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "CRITICAL", "baseScore": 9.5, "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"}}], "credits": [{"lang": "en", "value": "Lucas Dodgson of InfoGuard Labs", "type": "finder"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.2"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-07T14:38:05.213025Z", "id": "CVE-2026-54212", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-07T14:38:27.060Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-54212", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-08-07T14:38:05.213025Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-07T14:38:17.228Z"}}], "cna": {"title": "TeamDavid: Buffer Overflow in JSON-parsing", "source": {"discovery": "EXTERNAL"}, "credits": [{"lang": "en", "type": "finder", "value": "Lucas Dodgson of InfoGuard Labs"}], "metrics": [{"format": "CVSS", "cvssV4_0": {"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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "HIGH", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Tobit Laboratories AG", "modules": ["Webbox"], "product": "TeamDavid", "versions": [{"status": "affected", "version": "0", "lessThan": "Rollout 528", "versionType": "custom"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://chayns.net/77892-10814/tapp/763210?postId=11454", "tags": ["release-notes"]}, {"url": "https://labs.infoguard.ch/posts/22-cves-in-david-a-secure-m365-alternative/", "tags": ["third-party-advisory"]}], "x_generator": {"engine": "Vulnogram 1.0.2"}, "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.", "supportingMedia": [{"type": "text/html", "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.&nbsp;<div><div><span>This issue affects TeamDavid before Rollout 528.</span></div><div><span>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.</span></div></div>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-787", "description": "CWE-787 Out-of-bounds write"}]}], "providerMetadata": {"orgId": "455daabc-a392-441d-aa46-37d35189897c", "shortName": "NCSC.ch", "dateUpdated": "2026-09-07T12:58:58.837Z"}}}, "cveMetadata": {"cveId": "CVE-2026-54212", "state": "PUBLISHED", "dateUpdated": "2026-09-07T12:58:58.837Z", "dateReserved": "2026-06-12T09:32:46.514Z", "assignerOrgId": "455daabc-a392-441d-aa46-37d35189897c", "datePublished": "2026-08-07T09:47:12.542Z", "assignerShortName": "NCSC.ch"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "modules": ["Webbox"], "product": "TeamDavid", "vendor": "Tobit Laboratories AG", "versions": [{"lessThan": "Rollout 528", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "vulnerability@ncsc.ch"}], "cveTags": [], "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."}], "id": "CVE-2026-54212", "lastModified": "2026-10-24T16:10:00.153", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.5, "baseSeverity": "CRITICAL", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "NONE", "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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "vulnerability@ncsc.ch", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-54212", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-07T14:38:05.213025Z", "version": "2.0.3"}}]}, "published": "2026-08-07T10:16:58.353", "references": [{"source": "vulnerability@ncsc.ch", "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/"}], "sourceIdentifier": "vulnerability@ncsc.ch", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "vulnerability@ncsc.ch", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,Rollout 524]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "TeamDavid", "source": "cna", "vendor": "Tobit Laboratories AG"}, "product": "teamdavid", "vendor": "tobit_laboratories_ag"}], "created": "2026-08-07T11:30:03.845365+00:00", "updated": "2026-09-07T16:00:13.829679+00:00", "vendors": ["tobit_laboratories_ag", "tobit_laboratories_ag$PRODUCT$teamdavid"]}