Vulnerability-Lookup

CNVD-2026-16662

Vulnerability from cnvd - Published: 2026-04-10

Title

TeamViewer DEX Client存在未明漏洞（CNVD-2026-16662）

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日志条目被注入、篡改或伪造，影响日志完整性。

Severity

中

Patch Name

TeamViewer DEX Client存在未明漏洞（CNVD-2026-16662）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日志条目被注入、篡改或伪造，影响日志完整性。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-2026-1001/

Impacted products

Name
TeamViewer DEX Client <26.1

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-23566",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-23566"
    }
  },
  "description": "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\n\nTeamViewer DEX Client\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u65e5\u5fd7\u6761\u76ee\u88ab\u6ce8\u5165\u3001\u7be1\u6539\u6216\u4f2a\u9020\uff0c\u5f71\u54cd\u65e5\u5fd7\u5b8c\u6574\u6027\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://www.teamviewer.com/en/download/windows/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-16662",
  "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\u65e5\u5fd7\u6761\u76ee\u88ab\u6ce8\u5165\u3001\u7be1\u6539\u6216\u4f2a\u9020\uff0c\u5f71\u54cd\u65e5\u5fd7\u5b8c\u6574\u6027\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",
  "patchName": "TeamViewer DEX Client\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2026-16662\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "TeamViewer DEX Client \u003c26.1"
  },
  "referenceLink": "https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1001/",
  "serverity": "\u4e2d",
  "submitTime": "2026-02-05",
  "title": "TeamViewer DEX Client\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2026-16662\uff09"
}

CVE-2026-23566 (GCVE-0-2026-23566)

Vulnerability from cvelistv5 – Published: 2026-01-29 08:46 – Updated: 2026-01-29 16:44

Title

Log Injection in Content Distribution Service UDP Handler

Summary

A vulnerability in TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows an attacker on the adjacent network to inject, tamper with, or forge log entries in \Nomad Branch.log via crafted data sent to the UDP network handler. This can impact log integrity and nonrepudiation.

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-29 15:56 UTC

CWE

CWE-20 - Improper Input Validation

Assigner

References

1 reference

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

Impacted products

1 product

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

Credits

Threat Hunt Team of Bank of America

Show details on NVD website

JSON

To clipboard

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                "timestamp": "2026-01-29T15:56:46.401061Z",
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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.

Detection rules are retrieved from Rulezet.

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.