CVE-2025-34037
Linksys E-Series Router OS Command Injection Vulnerability
Description
An OS command injection vulnerability exists in various models of E-Series Linksys routers via the /tmUnblock.cgi and /hndUnblock.cgi endpoints over HTTP on port 8080. The CGI scripts improperly process user-supplied input passed to the ttcp_ip parameter without sanitization, allowing unauthenticated attackers to inject shell commands. This vulnerability is exploited in the wild by the "TheMoon" worm to deploy a MIPS ELF payload, enabling arbitrary code execution on the router. This vulnerability may affect other Linksys products to include, but not limited to, WAG/WAP/WES/WET/WRT-series router models and Wireless-N access points and routers.
INFO
Published Date :
June 24, 2025, 1:15 a.m.
Last Modified :
June 24, 2025, 3:15 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
Exploitability Score :
Affected Products
The following products are affected by CVE-2025-34037
vulnerability.
Even if cvefeed.io
is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-34037
.
URL | Resource |
---|---|
https://isc.sans.edu/diary/17633 | |
https://vulncheck.com/advisories/linksys-routers-command-injection | |
https://www.exploit-db.com/exploits/31683 |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-34037
vulnerability anywhere in the article.

-
Daily CyberSecurity
Critical Linksys Router Flaw (CVE-2025-34037, CVSS 10.0) Actively Exploited by TheMoon Worm
A critical vulnerability in multiple Linksys E-Series routers is being actively exploited in the wild by a self-propagating malware campaign known as TheMoon worm, according to new research from the S ... Read more
The following table lists the changes that have been made to the
CVE-2025-34037
vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Jun. 24, 2025
Action Type Old Value New Value Added Reference https://vulncheck.com/advisories/linksys-routers-command-injection Removed Reference https://vulncheck.com/advisories/linksys-multiple-routers-command-injection -
New CVE Received by [email protected]
Jun. 24, 2025
Action Type Old Value New Value Added Description An OS command injection vulnerability exists in various models of E-Series Linksys routers via the /tmUnblock.cgi and /hndUnblock.cgi endpoints over HTTP on port 8080. The CGI scripts improperly process user-supplied input passed to the ttcp_ip parameter without sanitization, allowing unauthenticated attackers to inject shell commands. This vulnerability is exploited in the wild by the "TheMoon" worm to deploy a MIPS ELF payload, enabling arbitrary code execution on the router. This vulnerability may affect other Linksys products to include, but not limited to, WAG/WAP/WES/WET/WRT-series router models and Wireless-N access points and routers. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-20 Added CWE CWE-78 Added Reference https://isc.sans.edu/diary/17633 Added Reference https://vulncheck.com/advisories/linksys-multiple-routers-command-injection Added Reference https://www.exploit-db.com/exploits/31683
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-34037
is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-34037
weaknesses.