CVE-2022-45712
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 · uneditedIP-COM M50 V15.11.0.33(10768) was discovered to contain a buffer overflow via the rules parameter in the formAddDnsForward function.
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 buffer overflow vulnerability exists in the IP-COM M50 router firmware version V15.11.0.33(10768). The vulnerability is located in the formAddDnsForward function, where the rules parameter does not properly validate input length before copying data into a fixed-size buffer. This allows an attacker to send specially crafted DNS forwarder rule configurations with oversized rules parameter values, potentially achieving remote code execution on the device.
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= 15.11.0.33CVSS 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.
-
Identify device model and firmware versionAccess the router's web管理界面 (typically at 192.168.0.1 or 192.168.1.1) and navigate to System Settings or Status page to view the firmware version. Alternatively, check the label on the device or the download source for the firmware file.Affected if The firmware version displayed is exactly V15.11.0.33(10768)
-
Confirm DNS forwarding feature is accessibleLog into the router's web管理界面 and navigate to the DNS forwarding or DNS forwarder settings section (usually under Network Settings, Advanced, or DNS settings). Verify if this feature exists and is visible.Affected if The DNS forwarding configuration interface is present and accessible in the firmware version
-
Verify web interface is reachableAttempt to access the router's IP address via HTTP/HTTPS from a client on the network. Confirm the login page or status page loads.Affected if The router's web管理界面 is reachable on the network
-
Check for existing DNS forwarder rulesIn the DNS forwarding configuration page, examine if any DNS forwarder rules have been configured. Look for entries in a rules table or list that controls DNS traffic forwarding.Affected if DNS forwarder rules are configured or the rules parameter can be modified
You are affected if the device is an IP-COM M50 router running firmware version V15.11.0.33(10768) and the DNS forwarding feature with the formAddDnsForward function is accessible and configurable.
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 firmware patch when available. If no patch exists, consider network segmentation to isolate the affected device and disable the DNS forwarding feature if not essential. Restrict administrative access to trusted networks to reduce attack surface.
- Consultation4.0 h
- Implementation2.0 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 $4,160.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-45712 — 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-2022-45712 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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