CVE-2025-64995

SYSTEM code execution via process hijacking

Published Dec 11, 2025 · Updated Dec 11, 2025

Privilege escalation in TeamViewer DEX instructions before 3.4 allows local users to execute arbitrary code with SYSTEM privileges. The 1E-Exchange-NomadClientHealth-ConfigureGeneralSetting instruction fails to protect its execution path, allowing a local process hijack while the instruction runs. Exploitation requires high local privileges and user interaction during instruction execution; successful attacks gain full endpoint control.

CVSS severity6.5
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in TeamViewer DEX instructions before 3.4 allows local users to execute arbitrary code with SYSTEM privileges. The 1E-Exchange-NomadClientHealth-ConfigureGeneralSetting instruction fails to protect its execution path, allowing a local process hijack while the instruction runs. Exploitation requires high local privileges and user interaction during instruction execution; successful attacks gain full endpoint control.

The record

CVE
CVE-2025-64995
Published
Dec 11, 2025
Updated
Dec 11, 2025
Vendor
TeamViewer
Product
TeamViewer DEX
Classifications
CWE-427, T1574
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Dec 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 11, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

TeamViewer · TeamViewer DEXversion=0 <3.4

Published CVSS scores

6.7NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.5TeamViewer Germany GmbHCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-427Uncontrolled Search Path Element
T1574Hijack Execution Flow

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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