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Teamviewer CVE-2023-0837

MEDIUM
Improper Authorization (CWE-285)
2023-06-14 psirt@teamviewer.com
5.5
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization verification
MITRE ATT&CK

1 technique across 1 tactic: Defense Evasion

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 5.5 (MEDIUM). Attack characteristics: local attack vector, low complexity, low privileges required, no user interaction not required.

Exploit ScenarioDerived

Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAI

An improper authorization check of local device settings in TeamViewer Remote between version 15.41 and 15.42.7 for Windows and macOS allows an unprivileged user to change basic local device settings. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-285. An improper authorization check of local device settings in TeamViewer Remote between version 15.41 and 15.42.7 for Windows and macOS allows an unprivileged user to change basic local device settings even though the options were locked. This can result in unwanted changes to the configuration. Affected products include: Teamviewer Remote. Version information: version 15.41.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 5.5 MEDIUM
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

DescriptionNVD

An improper authorization check of local device settings in TeamViewer Remote between version 15.41 and 15.42.7 for Windows and macOS allows an unprivileged user to change basic local device settings even though the options were locked. This can result in unwanted changes to the configuration.

Threat Intelligence Overview

EPSS Score
0.2%
Top 84% exploitable
Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

28
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +28
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)NVD

cpe:2.3:a:teamviewer:remote:*:*:*:*:*:*:*:*
CVE-2020-13699 HIGH POC
8.8 Jul 29

TeamViewer Desktop for Windows before 15.8.3 does not properly quote its custom URI handlers. Rated high severity (CVSS

CVE-2018-14333 HIGH POC
8.1 Jul 17

TeamViewer through 13.1.1548 stores a password in Unicode format within TeamViewer.exe process memory between "[00 88] a

CVE-2019-19362 MEDIUM POC
6.5 Dec 02

An issue was discovered in the Chat functionality of the TeamViewer desktop application 14.3.4730 on Windows. Rated medi

CVE-2018-16550 CRITICAL
9.8 Sep 05

TeamViewer 10.x through 13.x allows remote attackers to bypass the brute-force authentication protection mechanism by sk

CVE-2026-19042 HIGH
8.8 Aug 26

Command injection in TeamViewer Full Client and Host for Linux (prior to version 15.81.5) allows remote attackers to exe

CVE-2026-92372 HIGH
8.8 Oct 27

An out-of-bounds write in the screen-image decoder of TeamViewer Full Client for Linux and macOS allows a remote attacke

CVE-2025-44016 HIGH
8.8 Dec 11

Arbitrary code execution in TeamViewer DEX Client (formerly 1E Client) versions prior to 25.11 on Windows allows unauthe

CVE-2026-111585 HIGH
8.8 Oct 27

Integer overflow in TeamViewer's remote-control screen processing component affects Full Client, Portable, and Remote Co

CVE-2026-92370 HIGH
8.8 Sep 29

TeamViewer Full Client and Host on Windows, Linux, and macOS contain an improper access control flaw that allows authent

CVE-2021-34859 HIGH
8.8 Oct 25

This vulnerability allows remote attackers to execute arbitrary code on affected installations of TeamViewer 15.16.8.0.

CVE-2019-18251 HIGH
8.8 Nov 26

In Omron CX-Supervisor, Versions 3.5 (12) and prior, Omron CX-Supervisor ships with Teamviewer Version 5.0.8703 QS. Rate

CVE-2026-12703 HIGH
8.0 Jul 29

Two-factor authentication bypass in TeamViewer Full Client and Host for macOS before 15.80 lets an already-authenticated

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