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Dd-wrt Dd-wrt vulnerabilities

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Published CVEs affecting Dd-wrt Dd-wrt: 1 record(s), with affected versions and fixes.
cpe:2.3:o:dd-wrt:dd-wrt

CVE-2021-27137 High · 8.1 KEV High · 55 CWE-121 Jul 16, 2026
DD-WRT Stack-Based Buffer Overflow Vulnerability
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).