CVE-2026-91003Network attack vector

Stack corruption via unbounded redirct_url input

Published Sep 15, 2026 · Updated Sep 15, 2026

Stack-based buffer overflow in the D-Link DI-8300 CGI Service 16.07 allows remote attackers to cause unspecified impact via a crafted request. The rzgl_asp function handling /rzgl.asp fails to bound the redirct_url argument before the input overwrites its stack buffer. The service is remotely reachable, but the public record does not state whether authentication is required or bound the resulting consequence.

CVSS severityUnavailable
Unscored
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in the D-Link DI-8300 CGI Service 16.07 allows remote attackers to cause unspecified impact via a crafted request. The rzgl_asp function handling /rzgl.asp fails to bound the redirct_url argument before the input overwrites its stack buffer. The service is remotely reachable, but the public record does not state whether authentication is required or bound the resulting consequence.

The record

CVE
CVE-2026-91003
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
D-Link Corporation
Product
DI-8300
Classifications
CWE-121, T1190
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=16.07

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

D-Link Corporation · DI-8300version=16.07

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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