Fuji Electric V-SFT up to 6.2.7.0 V-SFT File Parser WriteV7DataToRom stack-based overflow

Summaryinfo

A vulnerability marked as critical has been reported in Fuji Electric V-SFT up to 6.2.7.0. Affected by this vulnerability is the function CV7BaseMap::WriteV7DataToRom of the component V-SFT File Parser. This manipulation causes stack-based overflow. This vulnerability is tracked as CVE-2025-61856. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Fuji Electric V-SFT up to 6.2.7.0. It has been declared as critical. Affected by this vulnerability is the function CV7BaseMap::WriteV7DataToRom of the component V-SFT File Parser. The manipulation with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A stack-based buffer overflow vulnerability exists in VS6ComFile!CV7BaseMap::WriteV7DataToRom of V-SFT v6.2.7.0 and earlier. Opening specially crafted V-SFT files may lead to information disclosure, affected system's abnormal end (ABEND), and arbitrary code execution.

The advisory is shared at monitouch.fujielectric.com. This vulnerability is known as CVE-2025-61856 since 10/02/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/10/2025).

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-33701). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• Fuji Electric

Name

• V-SFT

Version

• 6.2.0
• 6.2.1
• 6.2.2
• 6.2.3
• 6.2.4
• 6.2.5
• 6.2.6
• 6.2.7.0

License

• commercial

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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