How severe is CVE-2023-4104?

CVE-2023-4104 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2023-4104 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4104?

CVE-2023-4104 affects Mozilla Vpn. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4104?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-4104 published?

CVE-2023-4104 was published on 2023-09-11 and last updated on 2026-06-17.

CVE-2023-4104

CVE-2023-4104 is a medium-severity vulnerability in Mozilla Vpn with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Mozilla Vpn
Published: 2023-09-11
Last modified: 2026-06-17

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).

Frequently asked questions

What is CVE-2023-4104?: 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).
How severe is CVE-2023-4104?: CVE-2023-4104 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2023-4104 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4104?: CVE-2023-4104 affects Mozilla Vpn. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4104?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-4104 published?: CVE-2023-4104 was published on 2023-09-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mozilla:vpn:*:*:*:*:*:linux:*:*

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