CVE-2026-23563

Improper Link Resolution Before File Access (invoked by 1E‑Explorer‑TachyonCore‑DeleteFileByPath instruction) in TeamViewer DEX - 1E Client before version 26.1 on Windows allows a low‑privileged local attacker to delete protected system files via a crafted RPC control junction or symlink that is followed when the delete instruction executes.

CVSS v3 5.7 MEDIUM

5.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.5 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required HIGH

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1002/	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:teamviewer:digital_employee_experience:*:*:*:*:*:*:*:*

cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*

History

17 Jun 2026, 10:21

Type	Values Removed	Values Added
Summary		(es) Resolución de Enlace Incorrecta Antes del Acceso a Archivos (invocado por la instrucción 1E?Explorer?TachyonCore?DeleteFileByPath) en TeamViewer DEX - 1E Cliente antes de la versión 26.1 en Windows permite a un atacante local con pocos privilegios eliminar archivos de sistema protegidos a través de una unión de control RPC o un enlace simbólico manipulado que se sigue cuando se ejecuta la instrucción de eliminación.

11 Feb 2026, 19:20

Type	Values Removed	Values Added
CPE		cpe:2.3:o:microsoft:windows:-:::::::* cpe:2.3:a:teamviewer:digital_employee_experience::::::::
First Time		Teamviewer digital Employee Experience Teamviewer Microsoft Microsoft windows
References	~~() https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1002/ -~~	() https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1002/ - Vendor Advisory

29 Jan 2026, 09:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-29 09:16

Updated : 2026-06-17 10:21

NVD link : CVE-2026-23563

Mitre link : CVE-2026-23563

CVE.ORG link : CVE-2026-23563

JSON object : View

Products Affected

microsoft

windows

teamviewer

digital_employee_experience

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

{"id": "CVE-2026-23563", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-23563", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-01-29T15:57:26.896440Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "psirt@teamviewer.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.7, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE"}, "impactScore": 5.2, "exploitabilityScore": 0.5}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 5.2, "exploitabilityScore": 1.8}]}, "affected": [{"source": "psirt@teamviewer.com", "affectedData": [{"vendor": "TeamViewer", "modules": ["1E Client"], "product": "DEX", "versions": [{"status": "affected", "version": "0", "lessThan": "26.1", "versionType": "custom"}], "platforms": ["Windows"], "defaultStatus": "unaffected"}]}], "published": "2026-01-29T09:16:03.793", "references": [{"url": "https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1002/", "tags": ["Vendor Advisory"], "source": "psirt@teamviewer.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "psirt@teamviewer.com", "description": [{"lang": "en", "value": "CWE-59"}]}], "descriptions": [{"lang": "en", "value": "Improper Link Resolution Before File Access (invoked by 1E\u2011Explorer\u2011TachyonCore\u2011DeleteFileByPath instruction) in TeamViewer DEX - 1E Client before version 26.1 on Windows allows a low\u2011privileged local attacker to delete protected system files via a crafted RPC control junction or symlink that is followed when the delete instruction executes."}, {"lang": "es", "value": "Resoluci\u00f3n de Enlace Incorrecta Antes del Acceso a Archivos (invocado por la instrucci\u00f3n 1E?Explorer?TachyonCore?DeleteFileByPath) en TeamViewer DEX - 1E Cliente antes de la versi\u00f3n 26.1 en Windows permite a un atacante local con pocos privilegios eliminar archivos de sistema protegidos a trav\u00e9s de una uni\u00f3n de control RPC o un enlace simb\u00f3lico manipulado que se sigue cuando se ejecuta la instrucci\u00f3n de eliminaci\u00f3n."}], "lastModified": "2026-06-17T10:21:46.900", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:teamviewer:digital_employee_experience:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8E2A5CE4-D147-45E1-8D16-3257B6E79E70", "versionEndExcluding": "26.1"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "psirt@teamviewer.com"}