G DATA Total Security Vulnerability Allows Local Privilege Escalation via Symbolic Link Abuse
A local privilege escalation vulnerability (CVE-2026-13268) in G DATA Total Security's backup service allows attackers with initial code execution to gain SYSTEM privileges.
Zero Day Initiative (ZDI) has disclosed a critical local privilege escalation vulnerability, tracked as CVE-2026-13268, affecting G DATA Total Security software. The flaw resides within the product's backup service and can be exploited by an attacker who has already achieved low-privileged code execution on the target system.
The vulnerability specifically involves the abuse of symbolic links within the backup service's operations. By carefully crafting and placing a symbolic link, an attacker can trick the service into deleting an arbitrary file. This capability, when combined with other system configurations or vulnerabilities, can be leveraged to escalate privileges to the highest level, effectively granting the attacker SYSTEM privileges.
With SYSTEM privileges, an attacker can perform virtually any action on the compromised machine. This includes installing malicious software, stealing sensitive data, disabling security controls, or using the system as a pivot point to attack other systems within the network. The CVSS score for this vulnerability has been set at 7.8, indicating a high severity.
G DATA has addressed this vulnerability by releasing version 25.5.20.121 of its Total Security software. Users are strongly advised to update to this latest version to mitigate the risk posed by CVE-2026-13268. The disclosure timeline indicates that the vulnerability was initially reported to the vendor on February 12, 2026, with a coordinated public release of the advisory on July 15, 2026.
While the initial exploit vector requires an attacker to already have some level of code execution on the system, this type of vulnerability is often chained with other exploits or social engineering tactics to gain that initial foothold. The ability to escalate to SYSTEM privileges significantly increases the impact of any successful initial compromise.
This advisory serves as a reminder for users of endpoint security solutions to keep their software updated promptly. Vulnerabilities like CVE-2026-13268, even when requiring prior access, can be devastating if exploited by malicious actors targeting corporate or personal systems.
Further technical details regarding the exploitation method, such as the specific nature of the symbolic link abuse and the conditions required for successful privilege escalation, are typically kept confidential by researchers like ZDI to prevent widespread exploitation before patches are widely adopted. However, the core mechanism involves manipulating file operations through symbolic links within the backup service.
Users should ensure their G DATA Total Security installations are updated to version 25.5.20.121 or later. For organizations, this also highlights the importance of robust patch management processes to ensure all critical software is updated in a timely manner.