Vulnerability identifier: #VU57975

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-34803

CWE-ID: CWE-427

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
TeamViewer
Client/Desktop applications / Other client software

Vendor: TeamViewer

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to the application loads DLL libraries in an insecure manner. A remote attacker can place a specially crafted .dll file, trick the victim into opening a file, associated with the vulnerable application, and execute arbitrary code on victim's system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

TeamViewer: 14.7.2 - 14.7.258980

---

External links
http://community.teamviewer.com/English/discussion/111154/windows-v14-7-48644

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.