TeamViewer Full Client/Host up to 13.2.154006/14.7.48867/15.82 Privileged Helper toctou

Summaryinfo

A vulnerability classified as very critical was found in TeamViewer Full Client and Host up to 13.2.154006/14.7.48867/15.82. Affected by this issue is some unknown functionality of the component Privileged Helper. Such manipulation leads to toctou. This vulnerability is documented as CVE-2026-92374. The attack needs to be performed locally. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in TeamViewer Full Client and Host up to 13.2.154006/14.7.48867/15.82 and classified as very critical. Affected by this issue is an unknown function of the component Privileged Helper. The manipulation with an unknown input leads to a toctou vulnerability. Using CWE to declare the problem leads to CWE-367. The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A time-of-check time-of-use (TOCTOU) race condition combined with improper symbolic link handling in the privileged helper of TeamViewer Full Client and Host prior to version 15.83 for macOS allows a local attacker with low privileges to bypass installer package verification and install a malicious package. Successful exploitation can lead to local privilege escalation to root.

The advisory is available at teamviewer.com. This vulnerability is handled as CVE-2026-92374 since 09/16/2026. The exploitation is known to be easy. Local access is required to approach this attack. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/27/2026).

Upgrading to version 13.2.154007, 14.7.48868 or 15.83 eliminates this vulnerability.

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Productinfo

Vendor

• TeamViewer

Name

• Full Client
• Host

Version

• 13.2.154006
• 14.7.48867
• 15.0
• 15.1
• 15.2
• 15.3
• 15.4
• 15.5
• 15.6
• 15.7
• 15.8
• 15.9
• 15.10
• 15.11
• 15.12
• 15.13
• 15.14
• 15.15
• 15.16
• 15.17
• 15.18
• 15.19
• 15.20
• 15.21
• 15.22
• 15.23
• 15.24
• 15.25
• 15.26
• 15.27
• 15.28
• 15.29
• 15.30
• 15.31
• 15.32
• 15.33
• 15.34
• 15.35
• 15.36
• 15.37
• 15.38
• 15.39
• 15.40
• 15.41
• 15.42
• 15.43
• 15.44
• 15.45
• 15.46
• 15.47
• 15.48
• 15.49
• 15.50
• 15.51
• 15.52
• 15.53
• 15.54
• 15.55
• 15.56
• 15.57
• 15.58
• 15.59
• 15.60
• 15.61
• 15.62
• 15.63
• 15.64
• 15.65
• 15.66
• 15.67
• 15.68
• 15.69
• 15.70
• 15.71
• 15.72
• 15.73
• 15.74
• 15.75
• 15.76
• 15.77
• 15.78
• 15.79
• 15.80
• 15.81
• 15.82

CPE 2.3info

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CPE 2.2info

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