CVE-2025-34037

June 24, 2025, 3:15 a.m.

10.0
Critical

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.

Product(s) Impacted

Vendor Product Versions
Linksys
  • E-series Router
  • Wrt Series Router
  • Wag Series Router
  • Wap Series Router
  • Wes Series Router
  • Wet Series Router
  • Wifi N Access Point
  • *
  • *
  • *
  • *
  • *
  • *
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-20
Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a linksys e-series_router / / / / / / / /
a linksys wrt_series_router / / / / / / / /
a linksys wag_series_router / / / / / / / /
a linksys wap_series_router / / / / / / / /
a linksys wes_series_router / / / / / / / /
a linksys wet_series_router / / / / / / / /
a linksys wifi_n_access_point / / / / / / / /

References

https://isc.sans.edu/diary/17633
https://vulncheck.com/advisories/linksys-routers-command-injection
https://www.exploit-db.com/exploits/31683

Tags

CWE-20
disclosure@vulncheck.com
2025-06-24
CVE-2025-34037

CVSS Score

10.0 / 10

CVSS Data - 4.0

  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Attack Requirements: NONE
  • Privileges Required: NONE
  • User Interaction: NONE
  • Scope:
  • Confidentiality Impact: HIGH
  • Integrity Impact: HIGH
  • Availability Impact: HIGH
  • Exploit Maturity: NOT_DEFINED

    • CVSS:4.0/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

    View Vector String

Timeline

Published: June 24, 2025, 1:15 a.m.
Last Modified: June 24, 2025, 3:15 a.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

disclosure@vulncheck.com

Linked Attack Reports

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Published: November 10, 2025
Linked vulnerabilities : CVE-2024-7029 (CVSS 8.8), CVE-2024-10914 (CVSS 8.1), CVE-2024-12856 (CVSS 7.2), CVE-2024-12847 (CVSS 9.8), CVE-2025-22905 (CVSS 9.8), CVE-2023-52163 (CVSS 5.9), CVE-2025-1829 (CVSS 6.3), CVE-2015-2051, CVE-2021-41773, CVE-2017-10271, CVE-2018-10561, CVE-2023-1389, CVE-2017-18368, CVE-2025-4008 (CVSS 9.4), CVE-2025-5504 (CVSS 5.3), CVE-2024-3721, CVE-2025-34037 (CVSS 10.0), CVE-2022-44149, CVE-2022-37129, CVE-2022-36553, CVE-2020-27867, CVE-2018-11714, CVE-2017-18369, CVE-2014-1635, CVE-2025-7414, CVE-2020-25506, CVE-2020-10987, CVE-2023-47565, CVE-2023-25280, CVE-2021-42013, CVE-2014-6271, CVE-2019-16920, CVE-2016-6277, CVE-2023-26801, CVE-2023-51833
Downloadable IOCs: 20

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.