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CVE-2023-4104

MEDIUM
5.5
CVSS Score
Published: September 11, 2023 at 08:02 AM UTC
Updated: June 17, 2026 at 06:37 AM UTC
1 product affected across 1 vendorVPN

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

VPN· Mozilla
95%
v < (Linux)v < 2.16.1
Affected range stops below (Linux), so it looks safe — our inference, not a vendor statement
Affected range stops below 2.16.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (6)

ExploitIssue Tracking
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1831318
Issue TrackingPatch
Source: [email protected]
https://github.com/mozilla-mobile/mozilla-vpn-client/pull/7055
Issue TrackingPatch
Source: [email protected]
https://github.com/mozilla-mobile/mozilla-vpn-client/pull/7110
Issue Tracking
Source: [email protected]
https://github.com/mozilla-mobile/mozilla-vpn-client/pull/7151
Vendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2023-39/
ExploitMailing ListThird Party Advisory
Source: [email protected]
https://www.openwall.com/lists/oss-security/2023/08/03/1

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-862

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