# CVE-2026-8260: D-Link DCS-935L stack buffer overflow in HNAP Service

Source: https://junglewise.ai/threats/cve-2026-8260-d-link-dcs-935l-stack-buffer-overflow-in-hnap-service  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-11. Updated: 2026-07-23  
License: CC BY 4.0 with a link back

CVE-2026-8260 · Severity: high · CVSS 8.8 · Published 2026-05-11

A security vulnerability exists in the D-Link DCS-935L, a popular Wi-Fi camera used for home and business monitoring. An attacker can exploit a flaw in the device's management service to gain full control over the camera. This could lead to unauthorized access to video feeds, disruption of surveillance operations, or the device being used as a foothold to attack other systems on the local network.

Technologies: [D-Link DCS-935L](https://junglewise.ai/threats/technologies/dcs-935l). Vendors: [D-Link](https://junglewise.ai/threats/vendors/d-link), [Dlink](https://junglewise.ai/threats/vendors/dlink).

## Quick answers

**Is CVE-2026-8260 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-8260 being exploited in the wild.

**How severe is CVE-2026-8260?** High severity, with a CVSS score of 8.8, published 11 May 2026.

**Which products and versions are affected?** D-Link DCS-935L up to 1.10.01.

**Is there a fix for CVE-2026-8260?** 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-2026-8260 attacked?** It is attacked over the network, in an operating system.

**Am I affected by CVE-2026-8260?** Check whether you run D-Link DCS-935L or Dlink Dcs-935l Firmware 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

A stack-based buffer overflow vulnerability exists in the HNAP Service component of D-Link DCS-935L firmware (versions <= 1.10.01). The flaw is located in the SetDeviceSettings function within /web/cgi-bin/hnap/hnap_service. Specifically, the AESDecrypt function calls a conversion sub-function (sub_41B20C) that lacks length validation when processing the AdminPassword XML node. By sending a specially crafted, excessively long hexadecimal string in an XML request, a remote authenticated attacker can overflow a fixed-size stack buffer. This can lead to arbitrary remote code execution (RCE) with the privileges of the service. Public exploit code is available.

## Affected products

- D-Link DCS-935L Firmware up to 1.10.01

## Timeline

- 2026-05-11: advisory: Initial disclosure by VulDB/NVD
- 2026-05-11: other: Public exploit code released on GitHub

## References

- [https://github.com/0xcc12138/DCS-935L-HNAP-Service-CVE](https://github.com/0xcc12138/DCS-935L-HNAP-Service-CVE)
- [https://vuldb.com/submit/809888](https://vuldb.com/submit/809888)
- [https://vuldb.com/vuln/362557](https://vuldb.com/vuln/362557)
- [https://vuldb.com/vuln/362557/cti](https://vuldb.com/vuln/362557/cti)
- [https://www.dlink.com/](https://www.dlink.com/)

## Related threats

- [D-Link DCS-935L OS command injection in setconf.cgi](https://junglewise.ai/threats/cve-2026-13545-d-link-dcs-935l-os-command-injection-in-setconf-cgi)