CyberSecBulletin
CVE-2026-92372NVD status: Awaiting Analysis

Full Client: Write-what-where Condition

Published Updated By the CyberSecBulletin desk

CVE-2026-92372 is a high-severity write-what-where condition vulnerability in Full Client from TeamViewer, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. The record lists versions 15.83, 14.7.48868 (Linux), 14.7.48868 (macOS) as the first without the flaw, so updating Full Client to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.43% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Full Client to 15.83 or 14.7.48868 (Linux) or 14.7.48868 (macOS) or 13.2.154008 (Linux), whichever matches your release line, or a later version.
  2. Read the advisory on teamviewer.com for workarounds and exact fixed builds.
  3. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
  4. Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.

Affected products and versions

VendorProductAffected versionsFixed in
TeamViewerFull Clientbefore 15.83; 14.7.0 (Linux) up to, but not including, 14.7.48868 (Linux); 14.7.0 (macOS) up to, but not including, 14.7.48868 (macOS); 13.2.0 (Linux) up to, but not including, 13.2.154008 (Linux); 13.2.0 (macOS) up to, but not including, 13.2.154007 (macOS)15.83, 14.7.48868 (Linux), 14.7.48868 (macOS), 13.2.154008 (Linux), 13.2.154007 (macOS)

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
RequiredA user must take an action such as opening a file or link.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Scored by CNA (teamviewer.com).

Official description

An out-of-bounds write vulnerability in the screen-image decoder of TeamViewer Full Client for Linux and macOS prior to version 15.83 allows a remote attacker to execute arbitrary code by supplying crafted screen-image data during a remote-control session. The vulnerability can also be exploited by persuading a user to open a specially crafted TeamViewer session recording (.tvs). Missing destination bounds checking in the decoder allows crafted screen-image data to cause an out-of-bounds write to the image buffer. Exploitation requires user interaction.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Write-what-where Condition

Any condition where the attacker has the ability to write an arbitrary value to an arbitrary location, often as the result of a buffer overflow.

How developers prevent this class of flaw

  • Use a language that provides appropriate memory abstractions.
  • Use OS-level preventative functionality integrated after the fact. Not a complete solution.

More Write-what-where Condition vulnerabilities (CWE-123)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in Full Client

All Full Client vulnerabilities

Recent Write-what-where Condition vulnerabilities

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