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CVE-2021-27137

DD-WRT

Descripción

An issue was discovered in router/upnp/src/ssdp.c in DD-WRT before 45724. An unsafe strcpy in the UPnP handling functionality allows an unauthenticated remote attacker to send a request that would overflow an internal fixed buffer. Exploitation requires the DD-WRT user to enable UPnP (which is off by default, and only listens on internal interfaces by default). This occurs in ssdp_msearch (reachable by an M-SEARCH request).

CVSS 8.1EPSS 16.488%Riesgo 2.01
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Publicación
2026-07-16 18:16:39
Versiones afectadas
<45724
Tipo
Firmware
Última modificación
2026-07-22 05:17:07
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H