CVE-2026-36606

Mercusys AC12G EU V1 router with firmware AC12GEUV1200909 encrypts configuration backups with a hardcoded DES key using single DES in ECB mode. An attacker who obtains a backup file can decrypt it to recover all stored credentials including admin password, WiFi PSK, and DDNS credentials...

CVE-2026-36602

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...

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...

CVE-2026-36603

Mercusys AC12G (EU) V1 router (firmware AC12G(EU)_V1_200909) is affected by a UPnP IGD issue: 15 of 18 UPnP actions are exposed without authentication on port 1900, with UPnP enabled by default via the admin interface. This allows any unauthenticated LAN device to create arbitrary port forwarding...

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...

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-2026-36610

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...

CVE-2026-36611

Mercusys AC12G EU V1 with firmware AC12GEUV1200909 returns 128 bytes of uninitialized buffer when receiving POST requests without SOAPAction header on UPnP port 1900, exposing internal memory to unauthenticated adjacent network attackers...

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...

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...

CVE-2026-36608

Mercusys AC12G EU V1 router with firmware AC12GEUV1200909 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 intern...

CVE-2026-36615

Mercusys AC12G (EU) V1 with firmware AC12G(EU)_V1_200909 is affected by CVE-2026-36615 due to an undocumented /agileconfigreset endpoint that returns internal buffer contents to unauthenticated attackers on the adjacent network. The issue stems from exposure of internal data to nearby devices wit...

CVE-2026-36611

Mercusys AC12G EU V1 with firmware AC12GEUV1200909 returns 128 bytes of uninitialized buffer when receiving POST requests without SOAPAction header on UPnP port 1900, exposing internal memory to unauthenticated adjacent network attackers...

CVE-2026-36615

Mercusys AC12G EU V1 with firmware AC12GEUV1200909 exposes an undocumented /agileconfigreset endpoint that returns internal buffer contents to unauthenticated attackers on the adjacent network...

PT-2026-46004

Mercusys AC12G EU V1 with firmware AC12GEU V1 200909 responds to version.bind CHAOS TXT queries, disclosing the DNS resolver software version unbound 1.22.0, aiding targeted attacks against known vulnerabilities...

CVE-2026-36606

CVE-2026-36606 affects Mercusys AC12G (EU) V1 router running firmware AC12G(EU)_V1_200909. The vulnerability stems from encrypting configuration backups with a hardcoded DES key using single DES in ECB mode. An attacker who gains a backup file can decrypt it to recover all stored credentials, inc...

CVE-2026-36608

Mercusys AC12G EU V1 router with firmware AC12GEUV1200909 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 intern...

PT-2026-45999

Mercusys AC12G EU V1 with firmware AC12GEU V1 200909 returns 128 bytes of uninitialized buffer when receiving POST requests without SOAPAction header on UPnP port 1900, exposing internal memory 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-2026-36613

Mercusys AC12G (EU) V1 with firmware AC12G(EU)_V1_200909 is affected by a vulnerability where HTTP POST requests to undefined paths return 128 bytes of uninitialized internal buffer contents, exposing server state to unauthenticated adjacent network attackers. Affected component: the device’s HTT...