VULNERABILITY INTELLIGENCE

CVE-2021-34858

CVSS score7.8 HIGH
EPSS probability3.76%
CISA KEVNot currently listed
Published2022-01-13
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of TeamViewer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of TVS files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated structure. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-13606.

Weakness classification

  • zdi-disclosures@trendmicro.com: CWE-125
  • nvd@nist.gov: CWE-125

Primary references