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Mercusys

8 CVEs vendor

Monthly

CVE-2026-12495 Jul 27, 10:32 MEDIUM PATCH This Month

Denial-of-service in the Mercusys MB115-4G router's web interface allows unauthenticated attackers to crash the administration service by sending a crafted request to the /cgi/login endpoint. A stack buffer overflow in the http_gdpr_decrypt function corrupts memory and halts the httpd process, leaving the device operational but unmanageable through the web UI. A vendor patch is available; no public exploit or active exploitation has been identified.

Buffer Overflow Denial Of Service Stack Overflow Mb115 4G Mercusys
NVD
CVSS 4.0
5.3
EPSS
0.2%
CVE-2025-56463 Sep 26, 16:15 MEDIUM POC This Month

Mercusys MW305R 3.30 and below is has a Transport Layer Security (TLS) certificate private key disclosure. Rated medium severity (CVSS 6.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Information Disclosure Mw305R Firmware Mercusys
NVD GitHub
CVSS 3.1
6.8
EPSS
0.0%
CVE-2022-26988 May 10, 15:15 HIGH POC This Week

TP-Link TL-WDR7660 2.0.30, Mercury D196G 20200109_2.0.4, and Fast FAC1900R 20190827_2.0.2 routers have a stack overflow issue in `MntAte` function. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.

RCE Buffer Overflow Memory Corruption TP-Link Tl Wdr7660 Firmware +7
NVD GitHub VulDB
CVSS 3.1
7.8
EPSS
1.4%
CVE-2022-26987 May 10, 15:15 HIGH POC This Week

TP-Link TL-WDR7660 2.0.30, Mercury D196G 20200109_2.0.4, and Fast FAC1900R 20190827_2.0.2 routers have a stack overflow issue in `MmtAtePrase` function. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.

RCE Buffer Overflow Memory Corruption TP-Link Tl Wdr7660 Firmware +7
NVD GitHub VulDB
CVSS 3.1
7.8
EPSS
1.4%
CVE-2021-25811 Apr 29, 16:15 HIGH This Week

MERCUSYS Mercury X18G 1.0.5 devices allow Denial of service via a crafted value to the POST listen_http_lan parameter. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Mercury X18G Firmware Mercusys
NVD GitHub
CVSS 3.1
7.5
EPSS
1.6%
CVE-2021-25810 Apr 29, 16:15 MEDIUM POC This Month

Cross site Scripting (XSS) vulnerability in MERCUSYS Mercury X18G 1.0.5 devices, via crafted values to the 'src_dport_start', 'src_dport_end', and 'dest_port' parameters. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

XSS Mercury X18G Firmware Mercusys
NVD GitHub
CVSS 3.1
6.1
EPSS
1.1%
CVE-2021-23242 Jan 07, 21:15 MEDIUM POC This Month

MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ to the UPnP server, as demonstrated by the /../../conf/template/uhttpd.json URI. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Path Traversal Mercury X18G Firmware Mercusys
NVD GitHub
CVSS 3.1
5.3
EPSS
1.8%
CVE-2021-23241 Jan 07, 21:15 MEDIUM POC THREAT This Month

MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ in conjunction with a loginLess or login.htm URI (for authentication bypass) to the web server, as demonstrated by the. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Authentication Bypass Path Traversal Mercury X18G Firmware Mercusys
NVD GitHub
CVSS 3.1
5.3
EPSS
13.4%
EPSS 0% CVSS 5.3
MEDIUM PATCH This Month

Denial-of-service in the Mercusys MB115-4G router's web interface allows unauthenticated attackers to crash the administration service by sending a crafted request to the /cgi/login endpoint. A stack buffer overflow in the http_gdpr_decrypt function corrupts memory and halts the httpd process, leaving the device operational but unmanageable through the web UI. A vendor patch is available; no public exploit or active exploitation has been identified.

Buffer Overflow Denial Of Service Stack Overflow +2
NVD
EPSS 0% CVSS 6.8
MEDIUM POC This Month

Mercusys MW305R 3.30 and below is has a Transport Layer Security (TLS) certificate private key disclosure. Rated medium severity (CVSS 6.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Information Disclosure Mw305R Firmware Mercusys
NVD GitHub
EPSS 1% CVSS 7.8
HIGH POC This Week

TP-Link TL-WDR7660 2.0.30, Mercury D196G 20200109_2.0.4, and Fast FAC1900R 20190827_2.0.2 routers have a stack overflow issue in `MntAte` function. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.

RCE Buffer Overflow Memory Corruption +9
NVD GitHub VulDB
EPSS 1% CVSS 7.8
HIGH POC This Week

TP-Link TL-WDR7660 2.0.30, Mercury D196G 20200109_2.0.4, and Fast FAC1900R 20190827_2.0.2 routers have a stack overflow issue in `MmtAtePrase` function. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.

RCE Buffer Overflow Memory Corruption +9
NVD GitHub VulDB
EPSS 2% CVSS 7.5
HIGH This Week

MERCUSYS Mercury X18G 1.0.5 devices allow Denial of service via a crafted value to the POST listen_http_lan parameter. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Mercury X18G Firmware Mercusys
NVD GitHub
EPSS 1% CVSS 6.1
MEDIUM POC This Month

Cross site Scripting (XSS) vulnerability in MERCUSYS Mercury X18G 1.0.5 devices, via crafted values to the 'src_dport_start', 'src_dport_end', and 'dest_port' parameters. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

XSS Mercury X18G Firmware Mercusys
NVD GitHub
EPSS 2% CVSS 5.3
MEDIUM POC This Month

MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ to the UPnP server, as demonstrated by the /../../conf/template/uhttpd.json URI. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Path Traversal Mercury X18G Firmware Mercusys
NVD GitHub
EPSS 13% CVSS 5.3
MEDIUM POC THREAT This Month

MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ in conjunction with a loginLess or login.htm URI (for authentication bypass) to the web server, as demonstrated by the. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Authentication Bypass Path Traversal Mercury X18G Firmware +1
NVD GitHub

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