CVE-2023-44425
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 · uneditedD-Link DIR-X3260 SetSysEmailSettings AccountName Command Injection Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-X3260 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within prog.cgi, which handles HNAP requests made to the lighttpd webserver listening on TCP ports 80 and 443. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-21159.
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 · high confidenceD-Link DIR-X3260 routers contain a command injection vulnerability in the prog.cgi component that handles HNAP requests on the lighttpd webserver (ports 80/443). The flaw results from insufficient validation of user-supplied input before its use in a system call, allowing authenticated attackers to inject arbitrary commands. While authentication is required, the authentication mechanism itself can be bypassed, enabling remote code execution in the context of the root user.
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< 1.04b01CVSS 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
- Adjacent
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:A/AC:L/PR:L/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 the device modelCheck the router label or access the web interface and look for the model number displayed on the login page or in the status/dashboard section. Alternatively, check the DHCP vendor string or SNMP output for 'DIR-X3260'.Affected if The device is not a D-Link DIR-X3260 model, then it is not affected by this specific CVE.
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Check the installed firmware versionAccess the router web interface (http://routerIP) and navigate to Status or Management > Firmware Upgrade section to view the current firmware version. Alternatively, use the command 'grep VERSION /etc/os-release' or check the sysinfo CGI endpoint if available.Affected if The firmware version is 1.04b01 or higher, then the device is NOT affected. If version is lower than 1.04b01, the device IS affected.
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Verify if the web service is accessibleAttempt to access the router's web interface on ports 80 and 443 from the network segment you are checking. Use 'curl -I http://routerIP' and 'curl -Ik https://routerIP' to test HTTP/HTTPS responses.Affected if The web interface is not accessible (ports filtered or blocked), then the exploitation risk is significantly reduced but the vulnerability still exists in the firmware.
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Check if remote administration is enabledLog into the router web interface and navigate to Advanced > Remote Management or Settings > Administration. Look for options like 'Enable Remote Management', 'Allow WAN Access', or 'Remote Management IP' settings.Affected if Remote administration (WAN access) is enabled and the web interface is externally accessible, then the device is at higher risk of remote exploitation.
The device is affected if it is a D-Link DIR-X3260 running firmware version lower than 1.04b01, regardless of remote management settings, though exposure is higher when remote management is enabled.
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.
dbcve · scoped1.04b01
Apply available firmware updates from D-Link; if no patch exists, restrict network access to the router's management interface using firewall rules or disable remote administration.
D-Link DIR-X3260 Firmware version 1.04b01 or later
- 1. Navigate to the D-Link support page for the DIR-X3260 router at https://support.dlink.com/
- 2. Locate the firmware download section for DIR-X3260
- 3. Download firmware version 1.04b01 or the latest available version
- 4. Access the router's web management interface by connecting to the router's IP address (typically 192.168.0.1)
- 5. Navigate to the Administration or System Settings section
- 6. Locate the Firmware Upgrade or Update option
- 7. Upload the downloaded firmware file and initiate the upgrade
- 8. Wait for the upgrade to complete and the router to reboot
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation6.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-44425 — 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-2023-44425 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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