High severity · published Oct 27, 2026
CVE-2026-111585
Integer Overflow in TeamViewer Remote Control Screen Decompression Leading to Heap-Based Buffer Overflow
New
8.8
CVSS
0.3%
EPSS
No
On KEV
Description
An integer overflow in the remote-control screen processing component of TeamViewer clients (Full Client, Portable and Remote Control App) prior to version 15.83 may allow a malicious remote host to cause a denial of service or, depending on the platform, potentially execute arbitrary code with the privileges of the viewer process. Exploitation requires a user to establish a remote-control session to an attacker-controlled or compromised host.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FC
Full Client · TeamViewer
before 15.83; 15.64.0 (Legacy Windows 7 & 8) before 15.64.10 (Legacy Windows 7 & 8); 14.7.0 (Windows) before 14.7.48868 (Windows); 14.7.0 (Linux) before 14.7.48868 (Linux); 14.7.0 (macOS) before 14.7.48868 (macOS); 13.2.0 (Windows) before 13.2.36231 (Windows); +2 more · source: vendor
PO
Portable · TeamViewer
before 15.83; 15.64.0 (Legacy Windows 7 & 8) before 15.64.10 (Legacy Windows 7 & 8) · source: vendor
RC
Remote Control · TeamViewer
before 15.83 · source: vendor
Affected product
FC
Full Client
TeamViewer
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