Teamviewer
Monthly
Command injection in TeamViewer Full Client and Host for Linux (prior to version 15.81.5) allows remote attackers to execute arbitrary OS commands as the current user by sending a crafted URL through the out-of-session chat feature. The attack exploits CWE-78 (OS Command Injection) in the Linux URL-handling path and requires only that the victim click the malicious link - no attacker authentication is needed. No public exploit has been identified at time of analysis; the vendor has released a patch in version 15.81.5 per advisory TV-2026-1009.
Path traversal in TeamViewer Desktop Clients prior to version 15.81.5 allows an authenticated remote session participant to write files to arbitrary locations on the victim's local filesystem via the file transfer and virtual file clipboard features. The affected product family spans Full Client, Host, QuickSupport, and Portable editions across Windows, Linux, and macOS, covering the v13, v14, and current v15 release lines. Arbitrary file write can be chained to code execution at the privilege level of the user running TeamViewer; no public exploit has been identified at time of analysis and the vulnerability is not listed in CISA KEV.
Two-factor authentication bypass in TeamViewer Full Client and Host for macOS before 15.80 lets an already-authenticated, high-privileged attacker circumvent the configured 2FA 'Connections approval' control on the Unattended Access feature and establish a full remote session to the target Mac. The flaw is a business-logic error in the connection-approval flow (CWE-288) rather than a memory-safety issue, and successful exploitation yields interactive control of the host. No public exploit code has been identified at time of analysis and the issue is not listed in CISA KEV.
Broken access control in TeamViewer DEX Platform (On-Premises) before version 9.2 allows authenticated low-privileged users to invoke administrative API endpoints and access sensitive resources outside their authorized scope. The root cause is CWE-862 (Missing Authorization) - backend API endpoints omit proper role-based authorization checks despite confirming user identity. No public exploit code has been identified and this CVE is not listed in the CISA KEV catalog at time of analysis, but the network-accessible attack vector and low complexity make exploitation straightforward for any user holding valid platform credentials.
TeamViewer DEX versions below 24.5 allow authenticated users with actioner privileges to execute arbitrary elevated commands on connected hosts through inadequate input validation in the 1E-Nomad-RunPkgStatusRequest instruction. An attacker with these credentials could inject malicious commands to gain unauthorized system access and control. The vulnerability requires user interaction and high-level privileges but carries a significant risk due to the potential for complete system compromise.
Log timestamp tampering in TeamViewer DEX Client versions prior to 26.1 allows adjacent network attackers to inject malicious UDP Sync commands that corrupt event timestamps, undermining log integrity and forensic investigation capabilities. This input validation flaw affects Windows deployments of the NomadBranch service and could enable attackers to obscure the timeline of malicious activities or create misleading audit trails. No patch is currently available for this medium-severity vulnerability.
TeamViewer DEX Client versions before 26.1 contain an out-of-bounds read in the Content Distribution Service that enables remote attackers to leak stack memory and trigger denial of service without authentication. Successful exploitation could disclose memory contents useful for bypassing address space layout randomization and chaining with other vulnerabilities. No patch is currently available for this medium-severity flaw affecting Windows deployments.
Information disclosure and denial-of-service in TeamViewer DEX Client versions before 26.1 allows adjacent network attackers to trigger an out-of-bounds read via specially crafted packets, potentially leaking sensitive memory that could be leveraged to bypass ASLR protections. Affected Windows systems running the NomadBranch.exe content distribution service are vulnerable to attacks requiring only network proximity, with no authentication or user interaction needed.
Denial-of-service in TeamViewer DEX Client versions prior to 26.1 allows adjacent network attackers to crash the NomadBranch.exe service by sending specially crafted UDP packets that trigger a heap buffer overflow. The vulnerability stems from an integer underflow in the UDP command handler that can be exploited without authentication or user interaction. Currently, no patch is available and the attack requires network adjacency to the affected system.
Log tampering in TeamViewer DEX Client versions prior to 26.1 allows adjacent network attackers to inject, modify, or forge entries in the NomadBranch.log file through the UDP network handler, compromising log integrity and audit trail reliability. An attacker with network access can send crafted packets to the Content Distribution Service to manipulate logging records without authentication, potentially obscuring malicious activity or creating false audit entries.
TeamViewer DEX Client versions prior to 26.1 contain a null pointer dereference in the NomadBranch.exe Content Distribution Service that allows adjacent network attackers to crash the process without authentication. An attacker can exploit this vulnerability to disable the Content Distribution Service, causing a denial-of-service condition on affected Windows systems. No patch is currently available.
Digital Employee Experience is affected by cleartext transmission of sensitive information (CVSS 6.5).
Digital Employee Experience versions up to 26.1 is affected by improper link resolution before file access (CVSS 5.7).
Improper access control in the clipboard synchronization feature in TeamViewer Full Client prior version 15.57 and TeamViewer Meeting prior version 15.55.3 can lead to unintentional sharing of the. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Improper initialization of default settings in TeamViewer Remote Client prior version 15.51.5 for Windows, Linux and macOS, allow a low privileged user to elevate privileges by changing the personal. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
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.
TeamViewer Linux versions before 15.28 do not properly execute a deletion command for the connection password in case of a process crash. Rated medium severity (CVSS 4.2), this vulnerability is low attack complexity.
This vulnerability allows remote attackers to execute arbitrary code on affected installations of TeamViewer 15.16.8.0. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Buffer Overflow vulnerability could allow attackers to corrupt memory to execute arbitrary code or crash the application.
TeamViewer before 14.7.48644 on Windows loads untrusted DLLs in certain situations. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
TeamViewer Desktop for Windows before 15.8.3 does not properly quote its custom URI handlers. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
An issue was discovered in the Chat functionality of the TeamViewer desktop application 14.3.4730 on Windows. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
In Omron CX-Supervisor, Versions 3.5 (12) and prior, Omron CX-Supervisor ships with Teamviewer Version 5.0.8703 QS. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A DLL side loading vulnerability in the Windows Service in TeamViewer versions up to 11.0.133222 (fixed in 11.0.214397), 12.0.181268 (fixed in 12.0.214399), 13.2.36215 (fixed in 13.2.36216), and. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.
An issue was discovered in TeamViewer 14.2.2558. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
TeamViewer 10.x through 13.x allows remote attackers to bypass the brute-force authentication protection mechanism by skipping the "Cancel" step, which makes it easier to determine the correct value. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
TeamViewer through 13.1.1548 stores a password in Unicode format within TeamViewer.exe process memory between "[00 88] and "[00 00 00]" delimiters, which might make it easier for attackers to obtain. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. Public exploit code available and no vendor patch available.
Command injection in TeamViewer Full Client and Host for Linux (prior to version 15.81.5) allows remote attackers to execute arbitrary OS commands as the current user by sending a crafted URL through the out-of-session chat feature. The attack exploits CWE-78 (OS Command Injection) in the Linux URL-handling path and requires only that the victim click the malicious link - no attacker authentication is needed. No public exploit has been identified at time of analysis; the vendor has released a patch in version 15.81.5 per advisory TV-2026-1009.
Path traversal in TeamViewer Desktop Clients prior to version 15.81.5 allows an authenticated remote session participant to write files to arbitrary locations on the victim's local filesystem via the file transfer and virtual file clipboard features. The affected product family spans Full Client, Host, QuickSupport, and Portable editions across Windows, Linux, and macOS, covering the v13, v14, and current v15 release lines. Arbitrary file write can be chained to code execution at the privilege level of the user running TeamViewer; no public exploit has been identified at time of analysis and the vulnerability is not listed in CISA KEV.
Two-factor authentication bypass in TeamViewer Full Client and Host for macOS before 15.80 lets an already-authenticated, high-privileged attacker circumvent the configured 2FA 'Connections approval' control on the Unattended Access feature and establish a full remote session to the target Mac. The flaw is a business-logic error in the connection-approval flow (CWE-288) rather than a memory-safety issue, and successful exploitation yields interactive control of the host. No public exploit code has been identified at time of analysis and the issue is not listed in CISA KEV.
Broken access control in TeamViewer DEX Platform (On-Premises) before version 9.2 allows authenticated low-privileged users to invoke administrative API endpoints and access sensitive resources outside their authorized scope. The root cause is CWE-862 (Missing Authorization) - backend API endpoints omit proper role-based authorization checks despite confirming user identity. No public exploit code has been identified and this CVE is not listed in the CISA KEV catalog at time of analysis, but the network-accessible attack vector and low complexity make exploitation straightforward for any user holding valid platform credentials.
TeamViewer DEX versions below 24.5 allow authenticated users with actioner privileges to execute arbitrary elevated commands on connected hosts through inadequate input validation in the 1E-Nomad-RunPkgStatusRequest instruction. An attacker with these credentials could inject malicious commands to gain unauthorized system access and control. The vulnerability requires user interaction and high-level privileges but carries a significant risk due to the potential for complete system compromise.
Log timestamp tampering in TeamViewer DEX Client versions prior to 26.1 allows adjacent network attackers to inject malicious UDP Sync commands that corrupt event timestamps, undermining log integrity and forensic investigation capabilities. This input validation flaw affects Windows deployments of the NomadBranch service and could enable attackers to obscure the timeline of malicious activities or create misleading audit trails. No patch is currently available for this medium-severity vulnerability.
TeamViewer DEX Client versions before 26.1 contain an out-of-bounds read in the Content Distribution Service that enables remote attackers to leak stack memory and trigger denial of service without authentication. Successful exploitation could disclose memory contents useful for bypassing address space layout randomization and chaining with other vulnerabilities. No patch is currently available for this medium-severity flaw affecting Windows deployments.
Information disclosure and denial-of-service in TeamViewer DEX Client versions before 26.1 allows adjacent network attackers to trigger an out-of-bounds read via specially crafted packets, potentially leaking sensitive memory that could be leveraged to bypass ASLR protections. Affected Windows systems running the NomadBranch.exe content distribution service are vulnerable to attacks requiring only network proximity, with no authentication or user interaction needed.
Denial-of-service in TeamViewer DEX Client versions prior to 26.1 allows adjacent network attackers to crash the NomadBranch.exe service by sending specially crafted UDP packets that trigger a heap buffer overflow. The vulnerability stems from an integer underflow in the UDP command handler that can be exploited without authentication or user interaction. Currently, no patch is available and the attack requires network adjacency to the affected system.
Log tampering in TeamViewer DEX Client versions prior to 26.1 allows adjacent network attackers to inject, modify, or forge entries in the NomadBranch.log file through the UDP network handler, compromising log integrity and audit trail reliability. An attacker with network access can send crafted packets to the Content Distribution Service to manipulate logging records without authentication, potentially obscuring malicious activity or creating false audit entries.
TeamViewer DEX Client versions prior to 26.1 contain a null pointer dereference in the NomadBranch.exe Content Distribution Service that allows adjacent network attackers to crash the process without authentication. An attacker can exploit this vulnerability to disable the Content Distribution Service, causing a denial-of-service condition on affected Windows systems. No patch is currently available.
Digital Employee Experience is affected by cleartext transmission of sensitive information (CVSS 6.5).
Digital Employee Experience versions up to 26.1 is affected by improper link resolution before file access (CVSS 5.7).
Improper access control in the clipboard synchronization feature in TeamViewer Full Client prior version 15.57 and TeamViewer Meeting prior version 15.55.3 can lead to unintentional sharing of the. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Improper initialization of default settings in TeamViewer Remote Client prior version 15.51.5 for Windows, Linux and macOS, allow a low privileged user to elevate privileges by changing the personal. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
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.
TeamViewer Linux versions before 15.28 do not properly execute a deletion command for the connection password in case of a process crash. Rated medium severity (CVSS 4.2), this vulnerability is low attack complexity.
This vulnerability allows remote attackers to execute arbitrary code on affected installations of TeamViewer 15.16.8.0. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Buffer Overflow vulnerability could allow attackers to corrupt memory to execute arbitrary code or crash the application.
TeamViewer before 14.7.48644 on Windows loads untrusted DLLs in certain situations. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
TeamViewer Desktop for Windows before 15.8.3 does not properly quote its custom URI handlers. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
An issue was discovered in the Chat functionality of the TeamViewer desktop application 14.3.4730 on Windows. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
In Omron CX-Supervisor, Versions 3.5 (12) and prior, Omron CX-Supervisor ships with Teamviewer Version 5.0.8703 QS. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A DLL side loading vulnerability in the Windows Service in TeamViewer versions up to 11.0.133222 (fixed in 11.0.214397), 12.0.181268 (fixed in 12.0.214399), 13.2.36215 (fixed in 13.2.36216), and. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.
An issue was discovered in TeamViewer 14.2.2558. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
TeamViewer 10.x through 13.x allows remote attackers to bypass the brute-force authentication protection mechanism by skipping the "Cancel" step, which makes it easier to determine the correct value. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
TeamViewer through 13.1.1548 stores a password in Unicode format within TeamViewer.exe process memory between "[00 88] and "[00 00 00]" delimiters, which might make it easier for attackers to obtain. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. Public exploit code available and no vendor patch available.