CVE-2026-5815: D-Link DIR-645 hedwig.cgi hedwigcgi_main stack-based overflow

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-09 · updated 2026-07-24
Weakness: CWE-119

Description

A vulnerability was detected in D-Link DIR-645 1.01/1.02/1.03. Impacted is the function hedwigcgi_main of the file /cgi-bin/hedwig.cgi. The manipulation results in stack-based buffer overflow. The attack can be launched remotely. The exploit is now public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

Affected products

D-Link DIR-645: 1.01, 1.02, 1.03

References

https://github.com/Pers1st0/CVE/blob/main/stack-based%20buffer%20overflow%20vulnerability%20exists%20in%20the%20hedwig.cgi%20of%20D-Link%20DIR-645.md
https://github.com/Pers1st0/CVE/blob/main/stack-based%20buffer%20overflow%20vulnerability%20exists%20in%20the%20hedwig.cgi%20of%20D-Link%20DIR-645.md#poc
https://vuldb.com/submit/788298
https://vuldb.com/vuln/356263
https://vuldb.com/vuln/356263/cti
https://www.dlink.com/

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