# CVE-2026-6012: D-Link DIR-513 buffer overflow in formSetPassword

Source: https://junglewise.ai/threats/cve-2026-6012-d-link-dir-513-buffer-overflow-in-formsetpassword  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-10. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2026-6012 · Severity: high · CVSS 8.8 · Published 2026-04-10

A security vulnerability exists in the D-Link DIR-513 router, a device used to provide wireless internet connectivity. An attacker can exploit this flaw to cause a system crash or potentially take full control of the device by sending a specially crafted web request. Because this product is no longer supported by the manufacturer, no official security updates will be released, leaving affected devices permanently vulnerable.

Technologies: [Dlink Dir-513](https://junglewise.ai/threats/technologies/dir-513), [Dlink Dir-513 Firmware](https://junglewise.ai/threats/technologies/dir-513-firmware). Vendors: [Dlink](https://junglewise.ai/threats/vendors/dlink).

## Quick answers

**Is CVE-2026-6012 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-6012 being exploited in the wild.

**How severe is CVE-2026-6012?** High severity, with a CVSS score of 8.8, published 10 April 2026.

**Which products and versions are affected?** D-Link DIR-513 1.10.

**Is there a fix for CVE-2026-6012?** 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-2026-6012 attacked?** It is attacked over the network, in device firmware.

**Am I affected by CVE-2026-6012?** Check whether you run Dlink Dir-513 or Dlink Dir-513 Firmware. 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 D-Link DIR-513 firmware version 1.10. The flaw is located within the 'formSetPassword' function in the '/goform/formSetPassword' file, which serves as a POST request handler. By manipulating the 'curTime' argument in a remote POST request, an authenticated attacker can overflow a memory buffer. This can lead to arbitrary code execution or a device crash. As the product is end-of-life (EOL), no patch is available, and public exploit code has been disclosed.

## Affected products

- D-Link DIR-513 1.10

## Timeline

- 2026-04-10: disclosed: Vulnerability disclosed and CVE assigned
- 2026-04-10: advisory: Initial advisory published by VulDB

## References

- [https://lavender-bicycle-a5a.notion.site/D-Link-DIR-513-formSetPassword-33153a41781f806e9a3cf63a5a9091ac?source=copy_link](https://lavender-bicycle-a5a.notion.site/D-Link-DIR-513-formSetPassword-33153a41781f806e9a3cf63a5a9091ac?source=copy_link)
- [https://vuldb.com/submit/791858](https://vuldb.com/submit/791858)
- [https://vuldb.com/vuln/356568](https://vuldb.com/vuln/356568)
- [https://vuldb.com/vuln/356568/cti](https://vuldb.com/vuln/356568/cti)
- [https://www.dlink.com/](https://www.dlink.com/)

## Related threats

- [D-Link DIR-513 buffer overflow in formAdvanceSetup](https://junglewise.ai/threats/cve-2026-6014-d-link-dir-513-buffer-overflow-in-formadvancesetup)
- [D-Link DIR-513 buffer overflow in formSetRoute](https://junglewise.ai/threats/cve-2026-6013-d-link-dir-513-buffer-overflow-in-formsetroute)