Fuji Electric V-SFT-6/TELLUS V9 File Handler/X1 File VS6Sim.exe heap-based overflow

Summaryinfo

A vulnerability labeled as critical has been found in Fuji Electric V-SFT-6 and TELLUS. Affected by this issue is some unknown functionality of the file VS6Sim.exe of the component V9 File Handler/X1 File Handler. The manipulation results in heap-based overflow. This vulnerability is known as CVE-2025-50130. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in Fuji Electric V-SFT-6 and TELLUS (the affected version unknown). Affected is an unknown part of the file VS6Sim.exe of the component V9 File Handler/X1 File Handler. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A heap-based buffer overflow vulnerability exists in VS6Sim.exe contained in V-SFT and TELLUS provided by FUJI ELECTRIC CO., LTD. Opening V9 files or X1 files specially crafted by an attacker on the affected product may lead to arbitrary code execution.

The advisory is shared for download at jvn.jp. This vulnerability is traded as CVE-2025-50130 since 06/13/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/08/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Fuji Electric

Name

• TELLUS
• V-SFT-6

License

• commercial

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion