Cyber Resilience

CVE-2026-33208

RCE in Roxy-Wi ≤ 8.2.6.4

Published
24 April 2026
Modified
27 April 2026
Patch / advisory
CVSS Score v4 7.4
Click a component to see what it means
Raw vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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
EPSS Score 0.0066 48th percentile
Risk Priority 38 floored blend · peak EPSS

Summary

CVE-2026-33208 is a high-severity OS Command Injection (CWE-78) vulnerability in Roxy-Wi Roxy-Wi. Its CVSS base score is 7.4 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked at the 48th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2026-33208 is an OS command injection vulnerability (CWE-78) in Roxy-WI, a web interface for managing HAProxy, Nginx, Apache, and Keepalived servers. The issue affects versions prior to 8.2.6.4 and resides in the /config/<service>/find-in-config endpoint, which fails to sanitize the user-supplied "words" parameter. This parameter is embedded directly into a shell command string executed on a remote managed server via SSH, allowing injection of arbitrary shell metacharacters to escape the intended grep command context.

An authenticated attacker with low privileges can exploit this vulnerability remotely over the network with low complexity and no user interaction required, as indicated by its CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). Successful exploitation enables execution of arbitrary operating system commands with sudo privileges on the target managed server, leading to full remote code execution (RCE).

The vulnerability is patched in Roxy-WI version 8.2.6.4, as detailed in the project's GitHub commit (02f147d567a3cc8cf61a4b58ea4c2b7866a544de) and security advisory (GHSA-7m2h-gmvj-cjx2). Security practitioners should upgrade to the fixed version and review access controls for the affected endpoint to mitigate risks.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. Prior to version 8.2.6.4, the /config/ < service > /find-in-config endpoint in Roxy-WI fails to sanitize the user-supplied words parameter before embedding it into a shell command…

more

string that is subsequently executed on a remote managed server via SSH. An authenticated attacker can inject arbitrary shell metacharacters to break out of the intended grep command context and execute arbitrary OS commands with sudo privileges on the target server, resulting in full Remote Code Execution (RCE). Version 8.2.6.4 patches the issue.

CWE(s)

Related Threats

MITRE ATT&CK Enterprise Techniques

T1059 Command and Scripting Interpreter Execution
Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.
T1059.003 Windows Command Shell Execution
Adversaries may abuse the Windows command shell for execution.
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
T1059.001 PowerShell Execution
Adversaries may abuse PowerShell commands and scripts for execution.
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.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2022-31137Same product: Roxy-Wi Roxy-Wi
CVE-2024-43804Same product: Roxy-Wi Roxy-Wi
CVE-2026-22265Same product: Roxy-Wi Roxy-Wi
CVE-2026-27811Same product: Roxy-Wi Roxy-Wi
CVE-2023-25804Same product: Roxy-Wi Roxy-Wi
CVE-2026-33077Same product: Roxy-Wi Roxy-Wi
CVE-2026-33078Same product: Roxy-Wi Roxy-Wi
CVE-2023-25803Same product: Roxy-Wi Roxy-Wi
CVE-2026-33076Same product: Roxy-Wi Roxy-Wi
CVE-2023-29004Same product: Roxy-Wi Roxy-Wi

Affected Assets

roxy-wi
roxy-wi
≤ 8.2.6.4

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

Detect
Catch it (NIST detect / respond)

Harden
Shrink the surface (DISA STIG)

Validate
Prove the fix (OWASP ASVS)
  • V1.2.5
  • V1.2.8
  • V15.2.5

Mitigating Controls (NIST 800-53 r5) AI

Developer testing and evaluation can discover missing or incorrect command sanitization during development.

Input validation directly neutralizes or rejects special characters that would otherwise alter OS command structure.

Least privilege reduces the permissions available to any process that could be subverted by injected commands.

Least functionality restricts available OS commands and interpreters, limiting the blast radius of injection.

Secure engineering principles require proper neutralization of untrusted input before command construction.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

PR.PS-06's SDLC practices directly require secure coding and input handling that blocks command-injection defects, yet the single broad outcome leaves many specific neutralization vectors and verification gaps unaddressed.

PR.PS-02 partial match
prevents

Routine patching/maintenance can remediate known command-injection CVEs in dependencies (partial forward) but does nothing to stop developers from introducing improper neutralization in custom code (none reverse).

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

finds

Security testing and code review target insecure use of operating-system command interfaces, catching command-injection flaws introduced during development.

References