CVE-2025-10438: Yordam Katalog Path Traversal Vulnerability

CVE-2025-10438 Overview

CVE-2025-10438 is a path traversal vulnerability affecting Yordam Katalog software produced by Yordam Information Technology Consulting Education and Electrical Systems Industry Trade Inc. The flaw allows remote unauthenticated attackers to traverse outside the intended directory using dir/../../filename style sequences. Successful exploitation enables an attacker to read files outside the web root, exposing sensitive configuration, credentials, or application data. The issue affects all Yordam Katalog versions before 21.7. The vulnerability is classified under CWE-27: Path Traversal: 'dir/../../filename' and was published to the National Vulnerability Database (NVD) on September 25, 2025.

Critical Impact
Unauthenticated remote attackers can read arbitrary files on affected Yordam Katalog deployments by submitting crafted directory traversal sequences.

Affected Products

Yordam Katalog versions before 21.7
Yordam Information Technology Consulting Education and Electrical Systems Industry Trade Inc. product line

Discovery Timeline

2025-09-25 - CVE-2025-10438 published to NVD
2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-10438

Vulnerability Analysis

The vulnerability stems from improper sanitization of user-supplied path components within Yordam Katalog. The application accepts file or resource identifiers over HTTP and incorporates them into file system operations without canonicalizing the resulting path. Attackers supply traversal sequences such as ../../ to escape the intended base directory and reference arbitrary locations on the host file system.

The defect maps to CWE-27, which describes failure to neutralize multiple internal .. segments in path inputs. Because the attack requires no authentication and traverses the network, exploitation can be automated against exposed instances. The Exploit Prediction Scoring System (EPSS) currently lists this issue at 0.053% with a percentile of 16.487 as of 2026-05-04.

Root Cause

The root cause is missing or insufficient input validation on path parameters consumed by the catalog application. The code does not verify that the resolved absolute path remains within an approved base directory before performing file system access. Filtering logic likely strips a single .. token but fails when sequences are repeated, encoded, or combined with legitimate directory names.

Attack Vector

An attacker delivers an HTTP request containing a manipulated path parameter that includes traversal characters. The server resolves the path and returns the contents of files outside the intended scope. Because no user interaction or privileges are required, attackers can script mass scanning against exposed Yordam Katalog endpoints. See the USOM Security Advisory TR-25-0296 for vendor coordination details.

Detection Methods for CVE-2025-10438

Indicators of Compromise

HTTP requests to Yordam Katalog endpoints containing ../, ..\, or URL-encoded variants such as %2e%2e%2f and %252e%252e%252f
Web server access logs showing reads of sensitive paths such as /etc/passwd, web.config, or application configuration files
Anomalous outbound responses returning file content larger or different from expected catalog resources

Detection Strategies

Inspect web application firewall (WAF) and reverse proxy logs for path traversal signatures targeting catalog URLs
Correlate file access telemetry on the host running Yordam Katalog with the originating HTTP requests
Apply signature-based identification rules for CWE-27 traversal patterns in HTTP query strings and path segments

Monitoring Recommendations

Enable verbose access logging on the Yordam Katalog web tier and forward events to a centralized SIEM
Alert on requests producing HTTP 200 responses combined with traversal tokens in the request URI
Track file access by the application service account for reads outside its expected working directory

How to Mitigate CVE-2025-10438

Immediate Actions Required

Upgrade Yordam Katalog to version 21.7 or later as the authoritative remediation
Restrict network exposure of the Yordam Katalog interface to trusted networks or VPN until patching completes
Audit historical web logs for traversal attempts and validate the integrity of files accessible to the application user

Patch Information

The vendor addresses CVE-2025-10438 in Yordam Katalog version 21.7. Administrators should consult the USOM Security Advisory TR-25-0296 for vendor guidance and upgrade procedures.

Workarounds

Deploy WAF rules that block ../, ..\, and encoded traversal sequences in request paths and parameters targeting catalog endpoints
Constrain the application service account to read only the catalog content directory using operating system access control lists
Place the application behind a reverse proxy that performs URL canonicalization before forwarding requests

bash

# Example ModSecurity rule blocking path traversal patterns
SecRule REQUEST_URI|ARGS "@rx (\.\./|\.\.\\|%2e%2e%2f|%252e%252e%252f)" \
    "id:1010438,phase:2,deny,status:403,log,\
    msg:'CVE-2025-10438 Path Traversal attempt against Yordam Katalog'"