D-Link DIR-605L 2.13B01 POST Request /goform/formVirtualServ curTime buffer overflow

Summaryinfo

A vulnerability identified as critical has been detected in D-Link DIR-605L 2.13B01. Affected by this issue is the function formVirtualServ of the file /goform/formVirtualServ of the component POST Request Handler. This manipulation of the argument curTime causes buffer overflow. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability appears as CVE-2026-5979. The attack may be initiated remotely. In addition, an exploit is available.

Detailsinfo

A vulnerability was found in D-Link DIR-605L 2.13B01. It has been declared as critical. Affected by this vulnerability is the function formVirtualServ of the file /goform/formVirtualServ of the component POST Request Handler. The manipulation of the argument curTime with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared at lavender-bicycle-a5a.notion.site. This vulnerability is known as CVE-2026-5979. The exploitation appears to be easy. The attack can be launched remotely. Technical details and also a public exploit are known. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/10/2026).

It is possible to download the exploit at lavender-bicycle-a5a.notion.site. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-21186). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Router Operating System

Vendor

• D-Link

Name

• DIR-605L

Version

• 2.13B01

License

• commercial

Support

• end of life

Website

• Vendor: https://www.dlink.com/

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Submitinfo

Accepted

• Submit #791852: D-Link DIR-605L D-Link DIR-605L 2.13B01 BETA Buffer Overflow (by wxhwxhwxh_mie)

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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