D-Link · DIR-859 Router
CVE-2024-0769
D-Link DIR-859 HTTP POST Request hedwig.cgi path traversal
What it is
** UNSUPPORTED WHEN ASSIGNED ** A vulnerability was found in D-Link DIR-859 1.06B01. It has been rated as critical. Affected by this issue is some unknown functionality of the file /hedwig.cgi of the component HTTP POST Request Handler. The manipulation of the argument service with the input ../../../../htdocs/webinc/getcfg/DHCPS6.BRIDGE-1.xml leads to path traversal. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-251666 is the identifier assigned to this vulnerability. NOTE: This vulnerability only affects products that are no longer supported by the maintainer. NOTE: Vendor was contacted early and confirmed immediately that the product is end-of-life. It should be retired and replaced.
CISA: 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.
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Deadline for US federal agencies: July 16, 2025
More exploited flaws from D-Link
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| Jun 29, 2023 | Command Execution | DIR-859 Router | Critical 9.8 | 91% |
| Apr 24, 2026 | Command Injection | DIR-823X | High 7.2 | 88% |
| Dec 8, 2025 | Buffer Overflow | Routers | Critical 9.8 | 56% |
| Aug 5, 2025 | Unspecified | DCS-2530L and DCS-2670L Devices | High 7.5 | 98% |
| Aug 5, 2025 | DCS-2530L and DCS-2670L Command Injection | DCS-2530L and DCS-2670L Devices | High 8.8 | 54% |
| Aug 5, 2025 | Download of Code Without Integrity Check | DNR-322L | High 8.8 | 34% |
| Sep 30, 2024 | OS Command Injection | DIR-820 Router | Critical 9.8 | 98% |
| May 16, 2024 | Information Disclosure | DIR-605 Router | High 7.5 | 87% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.