CVE-2023-0655
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 · uneditedSonicWall Email Security contains a vulnerability that could permit a remote unauthenticated attacker access to an error page that includes sensitive information about users email addresses.
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 confidenceSonicWall Email Security contains an information disclosure vulnerability where an unauthenticated remote attacker can access an error page that exposes sensitive user email addresses. This occurs due to improper handling of error conditions that leak email address information in the response.
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<= 10.0.19.7431CVSS 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
- Low
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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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Confirm the installed product is SonicWall Email SecurityLog into the appliance admin interface or check system information to verify the product name is 'SonicWall Email Security' and not another SonicWall product.Affected if The product is any version of SonicWall Email Security
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Check the installed version numberNavigate to the admin dashboard, typically at Settings > About or System > Status, and locate the firmware/software version displayed. Compare this version to 10.0.19.7431.Affected if The installed version is 10.0.19.7431 or any earlier version (10.0.x before the patch)
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Determine if the web interface is network accessibleCheck network configuration or firewall rules to see if TCP ports 443 or 8443 (the email security web interface) are open to untrusted or public networks.Affected if The web interface is reachable from untrusted networks without restriction
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Inspect error page responsesTrigger an error condition on the login page or password reset feature by submitting invalid input, then capture and review the HTTP response for any email address leakage.Affected if Error responses contain email addresses that should not be displayed to unauthenticated users
A user is affected if they are running SonicWall Email Security version 10.0.19.7431 or earlier AND the web interface is accessible from untrusted networks, allowing potential exposure of user email addresses through error pages.
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 dataApply the vendor-supplied patch for CVE-2023-0655 to remediate the error page information disclosure. Until patches are available, restrict access to the email security web interface from untrusted networks.
- Consultation2.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,480.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-0655 — 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-2023-0655 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
- No spam, self-promotion, credentials, or personal data