How severe is CVE-2022-46770?

CVE-2022-46770 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2022-46770 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 21% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-46770?

CVE-2022-46770 affects Linuxfoundation Mirage Firewall. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-46770?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-46770 published?

CVE-2022-46770 was published on 2022-12-07 and last updated on 2026-06-17.

CVE-2022-46770

CVE-2022-46770 is a high-severity vulnerability in Linuxfoundation Mirage Firewall with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 21% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-835.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 21% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-835
Affected product: Linuxfoundation Mirage Firewall
Published: 2022-12-07
Last modified: 2026-06-17

Description

qubes-mirage-firewall (aka Mirage firewall for QubesOS) 0.8.x through 0.8.3 allows guest OS users to cause a denial of service (CPU consumption and loss of forwarding) via a crafted multicast UDP packet (IP address range of 224.0.0.0 through 239.255.255.255).

Frequently asked questions

What is CVE-2022-46770?: qubes-mirage-firewall (aka Mirage firewall for QubesOS) 0.8.x through 0.8.3 allows guest OS users to cause a denial of service (CPU consumption and loss of forwarding) via a crafted multicast UDP packet (IP address range of 224.0.0.0 through 239.255.255.255).
How severe is CVE-2022-46770?: CVE-2022-46770 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2022-46770 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 21% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-46770?: CVE-2022-46770 affects Linuxfoundation Mirage Firewall. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-46770?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-46770 published?: CVE-2022-46770 was published on 2022-12-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:linuxfoundation:mirage_firewall:*:*:*:*:*:qubesos:*:*

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