CVE-2024-0769 D-Link DIR-859 Router: file path flaw
In plain words: The program can be tricked into reading or writing files outside the folder it should stay in. Leaks files such as passwords and settings, or overwrites important ones.
Confirmed exploited by CISA on · US federal patch deadline Jul 16, 2025
What to do
- Install D-Link's security update for DIR-859 Router. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Patch edge devices first — attackers often start scanning for them within hours of a fix.
- Never expose the device's admin page to the internet.
- After patching a device that was exposed, follow the vendor's compromise checks, end active sessions and change passwords.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: They face the internet and guard the whole network, so a flaw here can hand attackers a way in — and these devices usually run no antivirus, so break-ins go unnoticed.
The details
- Official name
- D-Link DIR-859 Router Path Traversal Vulnerability
- Product
- D-Link DIR-859 Router
- CISA description
- D-Link DIR-859 routers contain a path traversal vulnerability in the file /hedwig.cgi of the component HTTP POST Request Handler. Manipulation of the argument service with the input ../../../../htdocs/webinc/getcfg/DHCPS6.BRIDGE-1.xml allows for the leakage of session data potentially enabling privilege escalation and unauthorized control of the device. This vulnerability affects legacy D-Link products. All associated hardware revisions have reached their end-of-life (EOL) or end-of-service (EOS) life cycle and should be retired and replaced per vendor instructions.
- Type of flaw
- File path flaw (CWE-22)
- Confirmed exploited
- Jun 25, 2025
- US federal patch deadline
- Jul 16, 2025
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Answering about CVE-2024-0769 ·
Questions about CVE-2024-0769
Is CVE-2024-0769 being exploited?
Yes. CISA added CVE-2024-0769 to its Known Exploited Vulnerabilities catalog on Jun 25, 2025, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2024-0769?
Install D-Link's security update for DIR-859 Router. If no update exists, follow the vendor's workaround or stop using the product until one ships. Patch edge devices first — attackers often start scanning for them within hours of a fix.
Am I affected by CVE-2024-0769?
Only if you use D-Link DIR-859 Router. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.