An issue has been discovered in GitLab CE/EE affecting all versions from 18
Description
An issue has been discovered in GitLab CE/EE affecting all versions from 18
Remediation
Apply vendor security updates immediately. Monitor for exploitation attempts and review access logs.
Executive Summary:
A high-severity vulnerability has been identified in multiple products from the vendor "An". This flaw, an out-of-bounds write, could allow an unauthenticated attacker to execute arbitrary code on a targeted system by tricking a user into processing a specially crafted file, potentially leading to a full system compromise.
Vulnerability Details
CVE-ID: CVE-2025-61857
Affected Software: An Multiple Products
Affected Versions: The vulnerability is confirmed in V-SFT v6. See the vendor advisory for a complete list of all affected products and versions.
Vulnerability: This is an out-of-bounds write vulnerability located in the
WinFontDynStrCheckfunction within theVS6ComFilelibrary. An attacker can exploit this by creating a malicious file or data stream with a specially crafted font string that, when processed by the vulnerable function, causes the application to write data beyond the boundaries of its allocated memory buffer. This memory corruption can be leveraged to trigger a denial-of-service condition by crashing the application or, more critically, to execute arbitrary code with the same privileges as the user running the software.Business Impact
This vulnerability is rated as High severity with a CVSS score of 7.8. Successful exploitation could lead to arbitrary code execution, allowing an attacker to install malware, exfiltrate sensitive data, or gain a persistent foothold within the network. The direct business impact includes potential data breaches, operational disruption if the affected software is critical, and significant reputational damage. The risk to the organization is substantial, as a compromised endpoint could serve as a pivot point for broader network intrusion.
Remediation Plan
Immediate Action: The primary remediation is to apply the security updates provided by the vendor to all affected systems immediately. After patching, it is crucial to monitor for any signs of exploitation attempts by reviewing application and system logs for unexpected crashes or anomalous behavior related to the affected software.
Proactive Monitoring: Implement enhanced monitoring on systems running the affected software. Look for unusual process creation, unexpected network connections originating from the application, and review crash dump files for evidence of memory corruption. Intrusion Detection/Prevention Systems (IDS/IPS) should be updated with signatures to detect and block exploit attempts targeting this specific vulnerability.
Compensating Controls: If immediate patching is not feasible, implement the following controls to mitigate risk:
Exploitation Status
Public Exploit Available: false
Analyst Notes: As of October 10, 2025, there are no known public proof-of-concept exploits or reports of this vulnerability being actively exploited in the wild. However, out-of-bounds write vulnerabilities are a well-understood class of bug, and it is highly likely that threat actors will develop exploits. Organizations must assume it will be exploited and act accordingly.
Analyst Recommendation
Given the High severity (CVSS 7.8) and the potential for arbitrary code execution, this vulnerability poses a significant risk. Although it is not currently listed in the CISA KEV catalog, it is a prime candidate for future inclusion should widespread exploitation occur. We strongly recommend that organizations prioritize the deployment of vendor-supplied patches to all affected systems on an expedited schedule. If patching is delayed, the compensating controls outlined above should be implemented immediately to reduce the attack surface.