CVE-2026-36603

Mercusys AC12G EU V1 router with firmware AC12GEUV1200909 exposes 15 of 18 UPnP IGD actions without authentication on port 1900, including AddPortMapping and GetExternalIPAddress. UPnP is enabled by default through the admin interface, allowing any unauthenticated LAN device to create arbitrary...

PT-2026-46002

Mercusys AC12G EU V1 with firmware AC12GEU V1 200909 exposes an undocumented /agileconfigreset endpoint that returns internal buffer contents to unauthenticated attackers on the adjacent network...

PT-2026-45996

Mercusys AC12G EU V1 router with firmware AC12GEU V1 200909 allows UPnP AddPortMapping to forward external ports to the router's own admin interface by accepting its own IP 192.168.1.1 or localhost 127.0.0.1 as InternalClient. An unauthenticated LAN attacker can expose the admin panel to the...

EUVD-2026-34146

Mercusys AC12G EU V1 router with firmware AC12GEUV1200909 allows unauthenticated brute-force attacks via the TDDP password change endpoint code=10, which lacks the rate limiting applied to the login endpoint code=7. An attacker on the adjacent network can attempt unlimited passwords without...

CVE-2026-36618

Mercusys AC12G EU V1 with firmware AC12GEUV1200909 responds to version.bind CHAOS TXT queries, disclosing the DNS resolver software version unbound 1.22.0, aiding targeted attacks against known vulnerabilities...

CVE-2026-36609

Mercusys AC12G EU V1 router with firmware AC12GEUV1200909 uses a static authentication nonce that does not change between requests from the same source IP. Combined with the predictable XOR-based password encoding securityEncode function, this allows an attacker to reverse captured authentication...

EUVD-2026-34155

Mercusys AC12G EU V1 with firmware AC12GEUV1200909 responds to version.bind CHAOS TXT queries, disclosing the DNS resolver software version unbound 1.22.0, aiding targeted attacks against known vulnerabilities...

PT-2026-46001

Mercusys AC12G EU V1 with firmware AC12GEU V1 200909 returns 128 bytes of uninitialized internal buffer contents when receiving HTTP POST requests to undefined paths, exposing server state to unauthenticated adjacent network attackers...

CVE-2026-36605

CVE-2026-36605 affects the Mercusys AC12G (EU) V1 router with firmware AC12G(EU)_V1_200909. The issue is a vulnerability to a HTTP denial of service triggered by a small number of crafted incomplete HTTP requests, resulting in a persistent crash that requires physical power cycling to recover. Th...

CVE-2026-36610

Mercusys AC12G (EU) V1 with firmware AC12G(EU)_V1_200909 transmits DDNS credentials over plaintext HTTP with only Base64 encoding; the firmware contains no TLS, enabling man-in-the-middle interception of DDNS credentials.

CVE-2026-36608

The advisory concerns the Mercusys AC12G (EU) V1 router with firmware AC12G(EU)_V1_200909. A UPnP AddPortMapping issue allows an unauthenticated LAN attacker to forward external ports to the router’s admin interface by abusing the InternalClient field (accepting 192.168.1.1 or 127.0.0.1). This en...

CVE-2026-36604

Mercusys AC12G (EU) V1 router vulnerable to DNS rebinding due to HTTP Host header validation failure in firmware AC12G(EU)_V1_200909. An external attacker could rebound a domain to the router’s internal IP, taking advantage of an existing CORS wildcard weakness (Access-Control-Allow-Origin: *). C...

CVE-2026-36602

CVE-2026-36602 affects the Mercusys AC12G (EU) V1 router with firmware AC12G(EU)_V1_200909. The issue arises in UPnP GetStatusInfo handling, which discloses kernel memory layout. An unauthenticated attacker on an adjacent network can obtain a raw MIPS KSEG0 kernel pointer, exposing kernel memory ...

PT-2026-46003

Mercusys AC12G EU V1 with firmware AC12GEU V1 200909 contains hardcoded WiFi driver credentials including a RADIUS shared secret, WPS test key, and default PSK embedded in the production firmware binary...

CVE-2026-36613

Mercusys AC12G EU V1 with firmware AC12GEUV1200909 returns 128 bytes of uninitialized internal buffer contents when receiving HTTP POST requests to undefined paths, exposing server state to unauthenticated adjacent network attackers...

CVE-2026-36607

Mercusys AC12G (EU) V1 router, firmware AC12G(EU)_V1_200909, is affected by CVE-2026-36607. The TDDP password change endpoint (code=10) allows unauthenticated brute-force attempts without rate limiting, unlike the login endpoint (code=7). An attacker on an adjacent network can attempt unlimited p...

EUVD-2026-34154

Mercusys AC12G EU V1 with firmware AC12GEUV1200909 contains hardcoded WiFi driver credentials including a RADIUS shared secret, WPS test key, and default PSK embedded in the production firmware binary...

EUVD-2026-34141

Mercusys AC12G EU V1 router with firmware AC12GEUV1200909 discloses kernel memory layout via the UPnP GetStatusInfo action. An unauthenticated attacker on the adjacent network can obtain a raw MIPS KSEG0 kernel pointer, revealing kernel memory layout and aiding further exploitation...

EUVD-2026-34143

Mercusys AC12G EU V1 router with firmware AC12GEUV1200909 does not validate the HTTP Host header, enabling DNS rebinding attacks. An external attacker can rebind a domain to the router's internal IP address, extending the CORS wildcard vulnerability Access-Control-Allow-Origin: to...

CVE-2026-36610

Mercusys AC12G EU V1 with firmware AC12GEUV1200909 transmits DDNS credentials over plaintext HTTP with only Base64 encoding. The firmware contains no TLS implementation, allowing man-in-the-middle interception of DDNS service credentials...