Cyber Resilience

CVE-2025-41271

Path Traversal in Waterfall-Security Wf-500 Firmware ≤ 7.9.1.0_r2502171040

Path Traversal
Published
29 May 2026
Modified
21 July 2026
Patch / advisory
View advisory
CVSS Score v4 8.7
Click a component to see what it means
Raw vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/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
EPSS Score 0.0043 36th percentile
Risk Priority 44 floored blend · peak EPSS

Summary

CVE-2025-41271 is a high-severity Relative Path Traversal (CWE-23) vulnerability in Waterfall-Security Wf-500 Firmware. Its CVSS base score is 8.7 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 36th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) and AC-3 (Access Enforcement) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability Data

Nozomi Networks Labs identified a CWE-23: Relative Path Traversal in the Console WebUI in Waterfall WF-500 TX and RX Hosts in version 7.9.1.0 R2502171040 that allows remote unauthenticated attackers to read arbitrary files from the device.

CWE(s)
CWE-23

Related Threats

MITRE ATT&CK Enterprise Techniques

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 →
T1005 Data from Local System Collection
Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2025-41280Same product: Waterfall-Security Wf-500
CVE-2025-41268Same product: Waterfall-Security Wf-500
CVE-2025-41273Same product: Waterfall-Security Wf-500
CVE-2025-41281Same product: Waterfall-Security Wf-500
CVE-2025-41265Same product: Waterfall-Security Wf-500
CVE-2025-41276Same product: Waterfall-Security Wf-500
CVE-2025-41266Same product: Waterfall-Security Wf-500
CVE-2025-41279Same product: Waterfall-Security Wf-500
CVE-2025-41272Same product: Waterfall-Security Wf-500
CVE-2025-41275Same product: Waterfall-Security Wf-500

Affected Assets

waterfall-security
wf-500 firmware
≤ 7.9.1.0_r2502171040

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)
  • V5.3.2

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match

Explicit validation of path inputs stops .. sequences from ever being interpreted by the file system.

AC-3 Access Enforcement partial match

Access enforcement directly blocks unauthorized file reads/writes that result from unresolved .. sequences.

AC-4 Information Flow Enforcement partial match

Information-flow rules can be configured to reject traversals that would move data outside an approved directory boundary.

AC-6 Least Privilege partial match

Least privilege reduces the set of reachable files even when a traversal succeeds.

SA-8 Security and Privacy Engineering Principles partial match

Secure-engineering principles require safe pathname construction and input neutralization before any file operation.

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

Secure SDLC practices directly require input validation and path sanitization that prevent relative traversal.

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.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development catches path traversal via static/dynamic analysis, but does not itself implement the fix.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle mandates input validation and path-handling controls that directly prevent relative path traversal.

A.8.26 Application security requirements partial match
prevents

Application security requirements explicitly call for controls against path traversal and other injection flaws.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles include directory isolation and canonicalization, reducing but not eliminating traversal risk.

A.8.28 Secure coding partial match
prevents

Secure coding standards require neutralizing path traversal sequences, directly addressing CWE-23.

A.8.3 Information access restriction partial match
mitigates

Information access restriction limits which files can be reached, mitigating impact but not preventing the traversal flaw.

References