Vulnerability-Lookup

CVE-2026-23563 (GCVE-0-2026-23563)

Vulnerability from cvelistv5 – Published: 2026-01-29 08:39 – Updated: 2026-01-29 16:53

Title

Privilege escalation in TeamViewer DEX via DeleteFileByPath instruction

Summary

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.

Severity

5.7 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-29 15:57 UTC

CWE

CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Assigner

TV CNA

CNA scorecard B 81/100 over 10 records in the last 180 days details

References

1 reference

URL	Tags
https://www.teamviewer.com/en/resources/trust-cen…

Impacted products

1 product

Vendor	Product	Version	CPE status
TeamViewer	DEX	Affected: 0 , < 26.1 (custom)	guessed

Credits

Lockheed Martin Red Team

Show details on NVD website

JSON

To clipboard

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CNVD-2026-16661

Vulnerability from cnvd - Published: 2026-04-10

Title

TeamViewer DEX Client存在未明漏洞（CNVD-2026-16661）

Description

TeamViewer DEX Client是德国TeamViewer公司的一个数字化员工体验和终端管理软件。 TeamViewer DEX Client存在安全漏洞，攻击者可利用该漏洞导致删除受保护的系统文件。

Severity

中

Patch Name

TeamViewer DEX Client存在未明漏洞（CNVD-2026-16661）的补丁

Patch Description

TeamViewer DEX Client是德国TeamViewer公司的一个数字化员工体验和终端管理软件。 TeamViewer DEX Client存在安全漏洞，攻击者可利用该漏洞导致删除受保护的系统文件。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://www.teamviewer.com/en/download/windows/

Reference

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

Impacted products

Name
TeamViewer DEX Client <26.1

Show details on source website

JSON

To clipboard

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      "cveNumber": "CVE-2026-23563",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-23563"
    }
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  "number": "CNVD-2026-16661",
  "openTime": "2026-04-10",
  "patchDescription": "TeamViewer DEX Client\u662f\u5fb7\u56fdTeamViewer\u516c\u53f8\u7684\u4e00\u4e2a\u6570\u5b57\u5316\u5458\u5de5\u4f53\u9a8c\u548c\u7ec8\u7aef\u7ba1\u7406\u8f6f\u4ef6\u3002\r\n\r\nTeamViewer DEX Client\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u5220\u9664\u53d7\u4fdd\u62a4\u7684\u7cfb\u7edf\u6587\u4ef6\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
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  "serverity": "\u4e2d",
  "submitTime": "2026-02-05",
  "title": "TeamViewer DEX Client\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2026-16661\uff09"
}

FKIE_CVE-2026-23563

Vulnerability from fkie_nvd - Published: 2026-01-29 09:16 - Updated: 2026-06-17 10:21

Severity

5.7 (Medium) - CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Summary

References

	URL	Tags
	psirt@teamviewer.com	https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1002/	Vendor Advisory

Impacted products

	Vendor	Product	Version
	teamviewer	digital_employee_experience	*
	microsoft	windows	-

JSON

To clipboard

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    },
    {
      "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."
    }
  ],
  "id": "CVE-2026-23563",
  "lastModified": "2026-06-17T10:21:46.900",
  "metrics": {
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}

GHSA-82CG-RXQ8-HC7M

Vulnerability from github – Published: 2026-01-29 09:31 – Updated: 2026-02-11 21:30

Details

Severity

5.7 (Medium)


                  
                    CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H

Show details on source website

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To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-23563"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-29T09:16:03Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-82cg-rxq8-hc7m",
  "modified": "2026-02-11T21:30:29Z",
  "published": "2026-01-29T09:31:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23563"
    },
    {
      "type": "WEB",
      "url": "https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1002"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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CVE-2026-23563 (GCVE-0-2026-23563)

CNVD-2026-16661

FKIE_CVE-2026-23563

GHSA-82CG-RXQ8-HC7M

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