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A vulnerability classified as critical was found in Belkin F9K1122 1.00.33. Affected by this vulnerability is the function formL2TPSetup of the file /goform/formL2TPSetup of the component webs. The manipulation of the argument L2TPUserName leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

In Belkin F9K1122 1.00.33 wurde eine kritische Schwachstelle entdeckt. Das betrifft die Funktion formL2TPSetup der Datei /goform/formL2TPSetup der Komponente webs. Mittels dem Manipulieren des Arguments L2TPUserName 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 2025-07-05 | Published 2025-07-06 | Updated 2025-07-07 | 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

1.00.33
affected

Timeline

2025-07-05:Advisory disclosed
2025-07-05:VulDB entry created
2025-07-05:VulDB entry last update

Credits

pjqwudi (VulDB User) reporter

References

github.com/wudipjq/my_vuln/blob/main/Belkin/vuln_7/7.md exploit

vuldb.com/?id.315001 (VDB-315001 | Belkin F9K1122 webs formL2TPSetup stack-based overflow) vdb-entry technical-description

vuldb.com/?ctiid.315001 (VDB-315001 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.603696 (Submit #603696 | Belkin F9K1122 1.00.33 Stack-based Buffer Overflow) third-party-advisory

github.com/wudipjq/my_vuln/blob/main/Belkin/vuln_7/7.md related

github.com/wudipjq/my_vuln/blob/main/Belkin/vuln_7/7.md exploit

cve.org (CVE-2025-7087)

nvd.nist.gov (CVE-2025-7087)

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