CVE-2025-22906

CriticalPublic PoCRCE

Published: 16 January 2025

Published

16 January 2025

Modified

09 April 2025

KEV Added

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Patch

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CVSS Score 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0218 84.5th percentile

Risk Priority 21 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-22906 is a critical-severity Code Injection (CWE-94) vulnerability in Edimax Re11S Firmware. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 15.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190) and 1 other technique. What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-10 Information Input Validation good match

prevent

Directly requires validation and sanitization of user inputs like the L2TPUserName parameter at the /goform/setWAN endpoint to prevent command injection exploitation.

SI-9 Information Input Restrictions good match

prevent

Enforces restrictions on information inputs to block invalid or malicious payloads targeting the vulnerable L2TPUserName parameter.

SI-2 Flaw Remediation good match

prevent

Mandates timely identification, prioritization, and remediation of the specific command injection flaw in RE11S v1.11 via patching.

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1059 Command and Scripting Interpreter Execution

Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.

attack.mitre.org →

Why these techniques?

Command injection in public web endpoint (/goform/setWAN) enables remote unauthenticated exploitation of the application (T1190) and direct arbitrary command execution (T1059).

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

NVD Description

RE11S v1.11 was discovered to contain a command injection vulnerability via the L2TPUserName parameter at /goform/setWAN.

Deeper analysisAI

CVE-2025-22906, published on 2025-01-16, is a command injection vulnerability (CWE-94) affecting RE11S version 1.11. The issue resides in the /goform/setWAN endpoint, where the L2TPUserName parameter fails to properly sanitize user input, enabling injection of arbitrary commands. This critical flaw carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Remote, unauthenticated attackers can exploit the vulnerability over the network with low complexity and without requiring user interaction. Successful exploitation grants attackers the ability to execute arbitrary commands on the affected device, resulting in high impacts to confidentiality, integrity, and availability, such as full system compromise.

Mitigation details and advisories are referenced at http://re11s.com, a proof-of-concept exploit at https://github.com/xyqer1/RE11S_1.11-setWAN-CommandInjection, and related vendor information at https://www.edimax.com/edimax/global/. Security practitioners should consult these sources for patching instructions or workarounds.