CVE-2023-4104

Name: CVE-2023-4104
Creator: NVD / NIST
Published: 2023-09-11T09:15:08.997+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.35%

Last modified Jun 17, 2026

CVE-2023-4104 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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).. EPSS estimates a 0.35% chance of exploitation in the next 30 days.

Description

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).

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

0.35%

27.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mozilla	Vpn	< 2.16.1

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1831318Exploit, Issue Tracking
https://github.com/mozilla-mobile/mozilla-vpn-client/pull/7055Issue Tracking, Patch
https://github.com/mozilla-mobile/mozilla-vpn-client/pull/7110Issue Tracking, Patch
https://github.com/mozilla-mobile/mozilla-vpn-client/pull/7151Issue Tracking
https://www.mozilla.org/security/advisories/mfsa2023-39/Vendor Advisory
https://www.openwall.com/lists/oss-security/2023/08/03/1Exploit, Mailing List, Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1831318Exploit, Issue Tracking
https://github.com/mozilla-mobile/mozilla-vpn-client/pull/7055Issue Tracking, Patch
https://github.com/mozilla-mobile/mozilla-vpn-client/pull/7110Issue Tracking, Patch
https://github.com/mozilla-mobile/mozilla-vpn-client/pull/7151Issue Tracking
https://www.mozilla.org/security/advisories/mfsa2023-39/Vendor Advisory
https://www.openwall.com/lists/oss-security/2023/08/03/1Exploit, Mailing List, Third Party Advisory

Timeline

Published: Sep 11, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-4104?

How severe is CVE-2023-4104?

CVE-2023-4104 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.35% probability of exploitation in the next 30 days.

How do I fix CVE-2023-4104?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-4104?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST