Which products and versions are affected by CVE-2022-46770?

Affected: Mirage Firewall (Linuxfoundation); solo5 (opam) versions >= 0.6.6. The full list is in the CVE brief.

Is CVE-2022-46770 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2022-46770 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2022-46770?

Public exploit code is available.

Is there a fix for CVE-2022-46770?

Fixed versions are available, including Mirage Firewall 0.8.4, solo5 0.7.5, solo5 099be86f0a17a619fcadbb970bb9e511d28d3cd8.

How urgently should CVE-2022-46770 be patched?

Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

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WatchlistHigh

CVE-2022-46770Mirage Firewall Vulnerability

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).

Published Dec 7, 2022 · Updated Aug 12, 2026 · Also known as OSEC-2022-01

Key Facts

Patch immediately

CVE-2022-46770 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting Mirage Firewall (Linuxfoundation), solo5 (opam).
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 22% probability of exploitation in the next 30 days.
Fixed versions are available, including Mirage Firewall 0.8.4, solo5 0.7.5, solo5 099be86f0a17a619fcadbb970bb9e511d28d3cd8.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

Scores

CVSS v3.1

7.5

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

EPSS (30-day exploit likelihood)

22%

Higher than 97.6% of all scored CVEs

Exploit maturity

Proof of concept

ATLAS score

38/100

Publication score, see How it works

Exploitation Verdict

KEV listed

Not listed

Federal due date

None

No federal due date

Ransomware use

Not reported

Attributed actors

None named

Exploit & Defence Guidance

Exploit maturity

Proof of concept

Public exploit code

Proof-of-concept links

In-the-wild evidence

Reports of active use

Advisories And Exploit References

Description

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
Mirage FirewallLinuxfoundation	See advisory	0.8.4
solo5opam	>= 0.6.6	0.7.5

Patched Releases

Mirage Firewall

0.8.4

solo5

0.7.5, 099be86f0a17a619fcadbb970bb9e511d28d3cd8

Timeline

Publicly disclosed
Dec 7, 2022
Last updated
Aug 12, 2026

Weakness Type

CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')

References

2 more references in the full CVE brief

FAQ

Common Questions.

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).
Affected: Mirage Firewall (Linuxfoundation); solo5 (opam) versions >= 0.6.6. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Mirage Firewall 0.8.4, solo5 0.7.5, solo5 099be86f0a17a619fcadbb970bb9e511d28d3cd8.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

Is CVE-2022-46770 On Your Attack Surface?

Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.