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01 Record

CVE-2026-16444

Improper Validation of File Paths in TeamViewer Desktop Clients

HighPUBLISHEDCNA: TV
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

02 Description

Improper Validation of File Paths in TeamViewer Desktop Clients

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.41% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 35.1% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD analysis status
Deferred. NVD last modified this record on 2026-09-01.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-08-26 09:10Z2 MO AGO
Last updated
2026-08-27 03:58Z2 MO AGO
Reserved
2026-07-21
Assigning CNA
TV
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-73External Control of File Name or PathBase
Data version
5.2
Document digest
f2543be9cac9c753f91c131670e2651e60e6818335f8b8cb64a0803e5ddaf136

05 Affected products

VendorProductVersionsPlatforms
TeamViewerFull Client, Host, QuickSupport & Portable15.0 to < 15.81.5Windows, MacOS, Linux
TeamViewerFull Client, Host, QuickSupport (v14 for Windows)14.0 to < 14.7.48833Windows
TeamViewerFull Client, Host, QuickSupport (v14 for Linux)14.0 to < 14.7.48838Linux
TeamViewerFull Client, Host, QuickSupport (v14 for macOS)14.0 to < 14.7.48838MacOS
TeamViewerFull Client, Host, QuickSupport (v13 for Linux)13.0 to < 13.2.153978Linux
TeamViewerFull Client, Host, QuickSupport (v13 for macOS)13.0 to < 13.2.153981MacOS

06 References

07 Remediation

Update to the last available client version.