CVE-2022-3236
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA code injection vulnerability in the User Portal and Webadmin allows a remote attacker to execute code in Sophos Firewall version v19.0 MR1 and older.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceA code injection vulnerability in the User Portal and Webadmin components of Sophos Firewall allows remote attackers to inject and execute arbitrary code. This affects versions v19.0 MR1 and older, enabling complete system compromise without authentication due to the critical CVSS 9.8 score.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 19.0.1CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify Sophos Firewall versionAccess the firewall management interface and navigate to System > Backup & Firmware, or run 'version' command in CLI to retrieve the installed firmware version.Affected if The installed version is v19.0 MR1 (19.0.0) or any version up to and including v19.0.1 (19.0.1). Versions prior to v19.0 are also affected.
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Confirm User Portal is enabledLog into Sophos Firewall and go to Users > User Portal > Settings, or inspect the configuration file for User Portal service status.Affected if User Portal is enabled and accessible. This component must be active for the vulnerability to be exploitable.
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Confirm Webadmin is enabledLog into Sophos Firewall and go to Administration > Webadmin > Settings, or check the service status via CLI using 'system webadmin status'.Affected if Webadmin interface is enabled. This component must be active for the vulnerability to be exploitable.
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Assess network exposure of User PortalReview firewall rules under Rules and NAT > Firewall rules to determine if TCP ports (typically 443) for User Portal are open to untrusted networks or the internet.Affected if User Portal is reachable from untrusted networks or the internet. The vulnerability is remotely exploitable when the interface is network-accessible.
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Assess network exposure of WebadminReview firewall rules to determine if the Webadmin port (typically 4434) is exposed to untrusted networks or the internet.Affected if Webadmin is reachable from untrusted networks or the internet. This significantly increases the risk of remote exploitation.
You are affected if your Sophos Firewall version is 19.0.1 or lower AND either the User Portal or Webadmin interface is enabled and accessible from untrusted networks.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpgrade Sophos Firewall to v19.0 MR2 or later to patch the code injection vulnerability. If immediate upgrade is not possible, disable User Portal and Webadmin access from untrusted networks as an interim measure.
- Consultation6.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,448.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-3236 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2022-3236 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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