CVE-2026-91003: D-Link DI-8300 CGI Service rzgl.asp rzgl_asp stack-based overflow

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-15 · updated 2026-09-15
Weakness: CWE-119

Description

A flaw has been found in D-Link DI-8300 16.07. The affected element is the function rzgl_asp of the file /rzgl.asp of the component CGI Service. This manipulation of the argument redirct_url causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been published and may be used.

Affected products

D-Link DI-8300: 16.07

References

https://github.com/Vivi-Xray/Xray-s-cve-/blob/main/rzgl/rzgl_asp.md
https://github.com/Vivi-Xray/Xray-s-cve-/blob/main/rzgl/rzgl_asp.py
https://vuldb.com/cve/CVE-2026-91003
https://vuldb.com/submit/932002
https://vuldb.com/vuln/403586
https://vuldb.com/vuln/403586/cti
https://www.dlink.com/
https://github.com/Vivi-Xray/Xray-s-cve-/blob/main/rzgl/rzgl_asp.md

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