Multiple D-Link DIR-series routers, including DIR-110, DIR-412, DIR-600, DIR-610, DIR-615, DIR-645, and DIR-815 firmware version 1.03, contain a vulnerability in the service.cgi endpoint that allows remote attackers to execute arbitrary system commands without authentication. The flaw stems from improper input handling in the EVENT=CHECKFW parameter, which is passed directly to the system shell without sanitization. A crafted HTTP POST request can inject commands that are executed with root privileges, resulting in full device compromise. These router models are no longer supported at the time of assignment and affected version ranges may vary. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-08-21 UTC.
A vulnerability classified as critical was found in D-Link DAP-1360, DIR-300, DIR-615, DIR-615GF, DIR-615S, DIR-615T, DIR-620, DIR-620S, DIR-806A, DIR-815, DIR-815AC, DIR-815S, DIR-816, DIR-820, DIR-822, DIR-825, DIR-825AC, DIR-825ACF, DIR-825ACG1, DIR-841, DIR-842, DIR-842S, DIR-843, DIR-853, DIR-878, DIR-882, DIR-1210, DIR-1260, DIR-2150, DIR-X1530, DIR-X1860, DSL-224, DSL-245GR, DSL-2640U, DSL-2750U, DSL-G2452GR, DVG-5402G, DVG-5402G, DVG-5402GFRU, DVG-N5402G, DVG-N5402G-IL, DWM-312W, DWM-321, DWR-921, DWR-953 and Good Line Router v2 up to 20240112. This vulnerability affects unknown code of the file /devinfo of the component HTTP GET Request Handler. The manipulation of the argument area with the input notice|net|version leads to information disclosure. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. VDB-251542 is the identifier assigned to this vulnerability.
D-Link DIR-815 REV. B (with firmware through DIR-815_REVB_FIRMWARE_PATCH_2.07.B01) devices have permission bypass and information disclosure in /htdocs/web/getcfg.php, as demonstrated by a /getcfg.php?a=%0a_POST_SERVICES%3DDEVICE.ACCOUNT%0aAUTHORIZED_GROUP%3D1 request.
D-Link DIR-815 REV. B (with firmware through DIR-815_REVB_FIRMWARE_PATCH_2.07.B01) devices have XSS in the RESULT parameter to /htdocs/webinc/js/info.php.
D-Link DIR-815 REV. B (with firmware through DIR-815_REVB_FIRMWARE_PATCH_2.07.B01) devices have XSS in the Treturn parameter to /htdocs/webinc/js/bsc_sms_inbox.php.
The remote administration UI in D-Link DIR-815 devices with firmware before 2.07.B01 allows remote attackers to bypass intended access restrictions via unspecified vectors.
Cross-site request forgery (CSRF) vulnerability in D-Link DIR-815 devices with firmware before 2.07.B01 allows remote attackers to hijack the authentication of arbitrary users for requests that insert XSS sequences.
D-Link DIR-815 devices with firmware before 2.07.B01 allow remote attackers to obtain sensitive information by leveraging cleartext storage of the administrative password.
D-Link DIR-815 devices with firmware before 2.07.B01 allow remote attackers to obtain sensitive information by leveraging cleartext storage of the wireless key.