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Description

An integer underflow in the UDP command handler of the TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows an adjacent network attacker to trigger a heap-based buffer overflow and cause a denial-of-service (service crash) via specially crafted UDP packets.

PUBLISHED Reserved 2026-01-14 | Published 2026-01-29 | Updated 2026-01-29 | Assigner TV




MEDIUM: 6.5CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-122 Heap-based Buffer Overflow

Product status

Default status
unaffected

Any version before 26.1
affected

Credits

Threat Hunt Team of Bank of America finder

References

www.teamviewer.com/...enter/security-bulletins/tv-2026-1001/

cve.org (CVE-2026-23567)

nvd.nist.gov (CVE-2026-23567)

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