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THREATINT
PUBLISHED

CVE-2025-6752

Linksys WRT1900ACS/EA7200/EA7450/EA7500 IGD Layer3Forwarding SetDefaultConnectionService stack-based overflow



Description

EN DE

A vulnerability has been found in Linksys WRT1900ACS, EA7200, EA7450 and EA7500 up to 20250619 and classified as critical. This vulnerability affects the function SetDefaultConnectionService of the file /upnp/control/Layer3Forwarding of the component IGD. The manipulation of the argument NewDefaultConnectionService leads to stack-based buffer overflow. The attack can be initiated 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 Linksys WRT1900ACS, EA7200, EA7450 and EA7500 bis 20250619 wurde eine kritische Schwachstelle gefunden. Es geht um die Funktion SetDefaultConnectionService der Datei /upnp/control/Layer3Forwarding der Komponente IGD. Dank der Manipulation des Arguments NewDefaultConnectionService mit unbekannten Daten kann eine stack-based buffer overflow-Schwachstelle ausgenutzt werden. Der Angriff kann über das Netzwerk erfolgen. Der Exploit steht zur öffentlichen Verfügung.

Reserved 2025-06-26 | Published 2025-06-27 | Updated 2025-06-27 | 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

20250619
affected

20250619
affected

20250619
affected

20250619
affected

Timeline

2025-06-26:Advisory disclosed
2025-06-26:VulDB entry created
2025-06-26:VulDB entry last update

Credits

starash (VulDB User) reporter

References

vuldb.com/?id.314050 (VDB-314050 | Linksys WRT1900ACS/EA7200/EA7450/EA7500 IGD Layer3Forwarding SetDefaultConnectionService stack-based overflow) vdb-entry technical-description

vuldb.com/?ctiid.314050 (VDB-314050 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.600638 (Submit #600638 | Linksys WRT1900ACS Ver. 2.0.3.201002 Stack-based Buffer Overflow) third-party-advisory

github.com/feiwuxingxie/cve/blob/main/linksys/vul01/1.md related

github.com/feiwuxingxie/cve/blob/main/linksys/vul01/1.md exploit

www.linksys.com/ product

cve.org (CVE-2025-6752)

nvd.nist.gov (CVE-2025-6752)

Download JSON

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