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Vulnerability record · CVE-2025-4883 · published 18 May 2025

CVE-2025-4883: Dlink di-8100g firmware memory buffer overflow vulnerability

Dlink · Di 8100g Firmware

A vulnerability was found in D-Link DI-8100 16.07.26A1. It has been declared as critical. This vulnerability affects the function ctxz_asp of the file /ctxz.asp of the component Connection Limit Page. The manipulation of the argument def/defTcp/defUdp/defIcmp/defOther leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

8.6 CVSS 4.0 High EPSS 8.2% · top 5.3% CWE-119 · Memory buffer overflowCWE-121 · Stack-based buffer overflow
8.6CVSS 4.0 base score, v2 8.3
8.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A vulnerability was found in D-Link DI-8100 16.07.26A1. It has been declared as critical. This vulnerability affects the function ctxz_asp of the file /ctxz.asp of the component Connection Limit Page. The manipulation of the argument def/defTcp/defUdp/defIcmp/defOther leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/Yhuanhuan01/DI-8100_Vulnerability_Report/blob/main/DI-8100-Vulnerability_Report_ctxz.md ExploitThird Party Advisory
https://vuldb.com/?ctiid.309436 Permissions RequiredThird Party AdvisoryVDB Entry
https://vuldb.com/?id.309436 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.576392 Third Party AdvisoryVDB Entry
https://www.dlink.com/ Product
https://github.com/Yhuanhuan01/DI-8100_Vulnerability_Report/blob/main/DI-8100-Vulnerability_Report_ctxz.md ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-4883), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.