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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.

In D-Link DI-8100 1.0 wurde eine Schwachstelle entdeckt. Sie wurde als kritisch eingestuft. Das betrifft die Funktion sprintf der Datei /upnp_ctrl.asp der Komponente jhttpd. Mittels Manipulieren des Arguments remove_ext_proto/remove_ext_port mit unbekannten Daten kann eine stack-based buffer overflow-Schwachstelle ausgenutzt werden. Der Angriff kann über das Netzwerk angegangen werden. Der Exploit steht zur öffentlichen Verfügung.

PUBLISHED Reserved 2025-07-19 | Published 2025-07-20 | Updated 2025-07-21 | Assigner VulDB




HIGH: 8.7CVSS: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
HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
HIGH: 8.8CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
9.0AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR

Problem types

Stack-based Buffer Overflow

Memory Corruption

Product status

1.0
affected

Timeline

2025-07-19:Advisory disclosed
2025-07-19:VulDB entry created
2025-07-19:VulDB entry last update

Credits

bazhuayu (VulDB User) reporter

References

github.com/buobo/bo-s-CVE/blob/main/DI-8100/upnp_ctrl_asp.md exploit

vuldb.com/?id.317026 (VDB-317026 | D-Link DI-8100 jhttpd upnp_ctrl.asp sprintf stack-based overflow) vdb-entry technical-description

vuldb.com/?ctiid.317026 (VDB-317026 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.618640 (Submit #618640 | D-Link DI-8100 V1.0 buf) third-party-advisory

vuldb.com/?submit.618641 (Submit #618641 | D-Link DI-8100 V1.0 Buffer Overflow (Duplicate)) third-party-advisory

github.com/buobo/bo-s-CVE/blob/main/DI-8100/upnp_ctrl_asp.md exploit

www.dlink.com/ product

cve.org (CVE-2025-7911)

nvd.nist.gov (CVE-2025-7911)

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