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).
Beskrivelsen gjengis slik kilden har publisert den, på engelsk.
Nøkkelfakta
Publisert
2026-07-16
Sist endret
2026-07-22
Tildelt av
cve@mitre.org
CVSS-vektor
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Scoret av
cve@mitre.org
Sannsynlighet for utnyttelse
16.5 %
høyere enn 97 %
av alle kjente sårbarheter
EPSS, neste 30 dager, modell v2026.06.15
Rettelse finnes
Ja, se referansene
Aktivt utnyttet
CISA førte denne sårbarheten inn i katalogen over kjente utnyttede
sårbarheter 2026-07-21,
med utbedringsfrist 2026-07-24 for amerikanske føderale etater.
Pålagt tiltak: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
