# CVE-2026-124564: D-Link DIR-878 path traversal in HNAP handler

Source: https://junglewise.ai/threats/cve-2026-124564-a-weakness-has-been-identified-in-d-link-dir-878-1-20b05  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-09. Updated: 2026-11-09  
License: CC BY 4.0 with a link back

CVE-2026-124564 · Severity: medium · CVSS 5.3 · Published 2026-11-09

D-Link DIR-878 is a wireless router used in home and small business networks. A path traversal vulnerability in the HNAP handler allows remote attackers to access files outside intended directories, potentially exposing sensitive configuration data or system files. The product is no longer supported by the vendor, leaving affected devices unpatched.

Technologies: [D-Link DIR-878](https://junglewise.ai/threats/technologies/d-link-dir-878). Vendors: [D-Link](https://junglewise.ai/threats/vendors/d-link).

## Quick answers

**Is CVE-2026-124564 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-124564 being exploited in the wild.

**How severe is CVE-2026-124564?** Medium severity, with a CVSS score of 5.3, published 9 November 2026.

**Which products and versions are affected?** D-Link DIR-878 1.20B05.

**Is there a fix for CVE-2026-124564?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-124564 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-124564?** Check whether you run D-Link DIR-878 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The HNAP Handler component in bin/prog.cgi contains a path traversal flaw in the GetListDirectory function. An attacker can manipulate the ListDirectoryPath parameter to traverse the filesystem and access arbitrary files via a network request, without authentication required. The vulnerability has been publicly disclosed and proof-of-concept code is available.

## Affected products

- D-Link DIR-878 1.20B05

## Timeline

- 2026-11-09: disclosed

## References

- [https://github.com/Zimo-666/DIR-878-cves/tree/main/06-getlistdirectory-path-traversal](https://github.com/Zimo-666/DIR-878-cves/tree/main/06-getlistdirectory-path-traversal)
- [https://vuldb.com/cve/CVE-2026-124564](https://vuldb.com/cve/CVE-2026-124564)

## Related threats

- [D-Link DIR-878 buffer overflow in HNAP SetWanSettings handler](https://junglewise.ai/threats/cve-2026-124563-a-security-flaw-has-been-discovered-in-d-link-dir-878-1-20b05)
- [D-Link DIR-878 buffer overflow in HNAP SetWanSettings](https://junglewise.ai/threats/cve-2026-124562-a-vulnerability-was-identified-in-d-link-dir-878-1-20b05)
- [D-Link DIR-878 stack buffer overflow in HNAP handler](https://junglewise.ai/threats/cve-2026-124561-a-vulnerability-was-determined-in-d-link-dir-878-1-20b05-this)
- [D-Link DIR-878 heap buffer overflow in HNAP Handler](https://junglewise.ai/threats/cve-2026-124560-a-vulnerability-was-found-in-d-link-dir-878-1-20b05-this-affects)