CVE-2026-36618

Mercusys AC12G (EU) V1 devices (firmware AC12G(EU)_V1_200909) are affected. The issue arises because the DNS resolver (unbound 1.22.0) reveals its version when responding to version.bind CHAOS TXT queries, which can aid targeted attacks against known vulnerabilities. The vulnerability pertains to...

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-2026-36603

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...

EUVD-2026-34147

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-2026-36616

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-2026-36603

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-2026-36602

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-2026-36607

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...

CVE-2026-36611

CVE-2026-36611 affects Mercusys AC12G (EU) V1 with firmware AC12G(EU)_V1_200909. When the device processes UPnP POST requests on port 1900 without a SOAPAction header, it returns 128 bytes of uninitialized memory, exposing internal data to unauthenticated adjacent-network attackers. The NVD/NVD-d...

Mercusys AC12G 信息泄露漏洞

The Mercusys AC12G is a Gigabit wireless router produced by the Chinese company Mercusys. The Mercusys AC12G EU V1 AC12G EU V1 version released in September 2009 contained security vulnerabilities. These vulnerabilities were caused by the UPnP GetStatusInfo operation, which disclosed the kernel...

Mercusys AC12G 加密问题漏洞

The Mercusys AC12G is a Gigabit wireless router produced by the Chinese company Mercusys. The Mercusys AC12G EU V1 AC12G EU V1 version has a security vulnerability. This vulnerability stems from the transmission of DDNS credentials via plaintext HTTP, which may allow for man-in-the-middle attacks...

Mercusys AC12G 资源管理错误漏洞

The Mercusys AC12G is a Gigabit wireless router produced by the Chinese company Mercusys. The Mercusys AC12G EU V1 AC12G EU V1 version has a security vulnerability. This vulnerability stems from an HTTP denial-of-service attack, which may cause continuous crashes due to a small number of speciall...

Mercusys AC12G 授权问题漏洞

The Mercusys AC12G is a Gigabit wireless router produced by the Chinese company Mercusys. The Mercusys AC12G EU V1 AC12G EU V1 version has security vulnerabilities. These vulnerabilities stem from unvalidated UPnP IGD operations, which may allow unauthenticated LAN devices to create arbitrary por...

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-2026-36607

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-2026-36612

Mercusys AC12G EU V1 with firmware AC12GEUV1200909 enables WPS 2.0 by default with a weak lockout policy 60-second lockout after 10 attempts...

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...

PT-2026-45994

Mercusys AC12G EU V1 router with firmware AC12GEU V1 200909 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...

EUVD-2026-34144

Mercusys AC12G EU V1 router with firmware AC12GEUV1200909 is vulnerable to a HTTP denial of service via a low number of crafted incomplete HTTP requests, causing a persistent crash that requires physical power cycling to recover...