High7
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

PT-2025-35: Local Privilege Escalation (LPE) in Tunnelblick

Error type:

  • CWE-269:Improper Privilege Management

Vulnerability vector:

  • Base vulnerability score (CVSSv4.0): CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  • Severity (CVSSv4.0): 7.0 (high)

Description:

The vulnerability was identified in Tunnelblick, versions 3.5beta06 to 6.1beta2.

The discovered vulnerability allows an attacker to escalate privileges from a normal user to root.

Vulnerability status: Confirmed by vendor

Date of vulnerability remediation: 22.04.2025

Recommendations:

  • Update to versions 7.1beta01 build 6220; 7.0 build 6210 or higher

Additional information: 

Researcher: Egor Filatov (Positive Technologies)

Identifiers:

CVE-2025-43711

BDU:2025-04879

Vendor:

Tunnelblick

Vulnerable product:

Tunnelblick

Vulnerable versions:

3.5beta06 to 6.1beta2

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