CVE-2024-12803
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 post-authentication stack-based buffer overflow vulnerability in SonicOS management allows a remote attacker to crash a firewall and potentially leads to code execution.
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 post-authentication stack-based buffer overflow vulnerability exists in SonicOS management interface that allows a remote authenticated attacker to overflow a stack buffer, potentially leading to firewall crash or arbitrary code execution with elevated privileges.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/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 SonicOS versionLog into the SonicWall management interface (web GUI or CLI) and navigate to System > Status or use the CLI command 'show version' to retrieve the installed SonicOS firmware versionAffected if The installed version falls within the affected version range (compare your version to the vendor's advisory for CVE-2024-12803)
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Verify management interface accessibilityConfirm whether the SonicOS management web interface (HTTPS on port 443 or HTTP on port 80) is accessible from network segments outside your trusted management networkAffected if The management interface is exposed to untrusted networks (internet or non-VLAN-segmented user networks)
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Check management access authentication methodReview the authentication settings for the management interface in System > Administration and verify that strong authentication is enforced for all management accountsAffected if Management accounts use weak or default credentials, or multi-factor authentication is not enabled for management access
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Confirm remote management is enabledIn the SonicWall GUI, navigate to System > Administration and check if 'Allow remote management' is enabled, or use the CLI command 'show interface' to list management-enabled interfacesAffected if Remote management is enabled on WAN or untrusted interfaces without VPN requirements
You are affected if your SonicOS version is within the affected range AND the management interface is accessible to an authenticated attacker (either directly exposed or with weak authentication controls).
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 vendor-provided patches for SonicOS immediately. Restrict management interface access to trusted networks or VPN, and ensure strong authentication for management accounts.
- Consultation4.0 h
- Implementation6.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,312.
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Free · runs locallyCheck whether your project pulls in CVE-2024-12803 — 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-2024-12803 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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