TI-2023-03800 Aliases CVE-2023-4104 GHSA-f2fh-jcp2-h8mp

Missing authorization in Mozilla VPN 2.16.1

LOW 25CWE-862Published 2023-09-11 · Updated 2025-07-03

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · High · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-862.

Summary

An invalid Polkit Authentication check and missing authentication requirements for D-Bus methods allowed any local user to configure arbitrary VPN setups. *This bug only affects Mozilla VPN on Linux. Other operating systems are unaffected.* This vulnerability affects Mozilla VPN 2.16.1 < (Linux).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00334 26th percentileScored 2026-11-07

Public exploit Yes 2 exploit referencesTagged by NVD

Fix Fixed Mozilla VPN 2.16.1 (Mozilla): (Linux)

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Mozilla	Mozilla VPN 2.16.1	before (Linux)	(Linux)	Patch available	CNA

Mozilla VPN 2.16.1 VendorMozilla Affected before (Linux) Fixed in (Linux) Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:mozilla:vpn::::::linux::*	before 2.16.1	Vulnerable	Mozilla

cpe:2.3:a:mozilla:vpn:*:*:*:*:*:linux:*:* Versions before 2.16.1 Vulnerable ·Mozilla

Remediation

Fix · CNA Mozilla VPN 2.16.1 (Mozilla) Fixed in (Linux)

Timeline

2026-10-02 Threatist record created from CVE-2023-4104
2026-10-03 Alias added: GHSA-f2fh-jcp2-h8mp

References

Exploit 2

Patch 2

Advisory 1

https://www.mozilla.org/security/advisories/mfsa2023-39/

Other 1

https://github.com/mozilla-mobile/mozilla-vpn-client/pull/7151

TI-2025-05127 Local privilege escalation vulnerability in Mozilla VPN clients for macOS v2.27.0 and below. CVSS 3.1HIGH 7.8
TI-2022-00437 Unrestricted file upload in Mozilla VPN CVSS 3.1HIGH 7.8
TI-2020-12353 Session fixation in Mozilla VPN iOS 1.0.7 CVSS 3.1HIGH 7.6

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences