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Vulnerability record · CVE-2025-7911 · published 20 July 2025

CVE-2025-7911: Dlink di-8100 firmware memory buffer overflow vulnerability

Dlink · Di 8100 Firmware

A vulnerability classified as critical was found in D-Link DI-8100 1.0. This vulnerability affects the function sprintf of the file /upnp_ctrl.asp of the component jhttpd. The manipulation of the argument remove_ext_proto/remove_ext_port leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

7.4 CVSS 4.0 High EPSS 1.5% · top 26.6% CWE-119 · Memory buffer overflowCWE-121 · Stack-based buffer overflow
7.4CVSS 4.0 base score, v2 9.0
1.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
7References
17 Jun 2026Last modified by NVD

Description

A vulnerability classified as critical was found in D-Link DI-8100 1.0. This vulnerability affects the function sprintf of the file /upnp_ctrl.asp of the component jhttpd. The manipulation of the argument remove_ext_proto/remove_ext_port 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:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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/buobo/bo-s-CVE/blob/main/DI-8100/upnp_ctrl_asp.md Broken Link
https://vuldb.com/?ctiid.317026 Permissions RequiredVDB Entry
https://vuldb.com/?id.317026 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.618640 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.618641 Third Party AdvisoryVDB Entry
https://www.dlink.com/ Product
https://github.com/buobo/bo-s-CVE/blob/main/DI-8100/upnp_ctrl_asp.md Broken Link

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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-2025-7911), CISA KEV, FIRST EPSS (scores of 2026-10-06). This page is refreshed as NVD updates the record.