# CVE-2026-107899: Fuji Electric V-SFT out-of-bounds read in macro parameter validation

Source: https://junglewise.ai/threats/cve-2026-107899-v-sft-provided-by-fuji-electric-co-ltd-contains-an-out-of-bounds  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-26. Updated: 2026-10-26  
License: CC BY 4.0 with a link back

CVE-2026-107899 · Severity: high · CVSS 7.8 · Published 2026-10-26

V-SFT is software used to program and configure Fuji Electric control systems and human-machine interfaces. An out-of-bounds read vulnerability in the macro parameter validation component allows attackers to trigger information disclosure or arbitrary code execution by opening a specially crafted V7 project file, potentially compromising critical industrial control systems.

Technologies: [Fuji Electric V-SFT](https://junglewise.ai/threats/technologies/fuji-electric-v-sft). Vendors: [Fuji Electric](https://junglewise.ai/threats/vendors/fuji-electric).

## Quick answers

**Is CVE-2026-107899 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-107899 being exploited in the wild.

**How severe is CVE-2026-107899?** High severity, with a CVSS score of 7.8, published 26 October 2026.

**Which products and versions are affected?** Fuji Electric V-SFT 6.2.11.0 and prior.

**Is there a fix for CVE-2026-107899?** Yes: fixed in V-SFT 6.2.12.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-107899 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-107899?** Check whether you run Fuji Electric V-SFT at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in V-SFT 6.2.12.0

## Technical details

The vulnerability is an out-of-bounds read in VS6EditData!CDataRomErrorCheck::CheckSymbolMacroParam triggered when processing malformed macro parameters in V7 files. Attack requires local access and user interaction to open a crafted file; no authentication is required. An attacker can read out-of-bounds memory to leak sensitive information or exploit the condition to achieve arbitrary code execution with the privileges of the V-SFT process.

## Affected products

- Fuji Electric V-SFT 6.2.11.0 and prior

## Timeline

- 2026-10-26: disclosed

## References

- [https://felib.fujielectric.co.jp/en/M10010/M20060/document_detail/5d9dd71d-9494-41a4-aa5c-8e6b8b21066b?region=en-glb](https://felib.fujielectric.co.jp/en/M10010/M20060/document_detail/5d9dd71d-9494-41a4-aa5c-8e6b8b21066b?region=en-glb)
- [https://jvn.jp/en/vu/JVNVU96549652/](https://jvn.jp/en/vu/JVNVU96549652/)

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- [Fuji Electric V-SFT out-of-bounds read in macro command check](https://junglewise.ai/threats/cve-2026-107898-v-sft-provided-by-fuji-electric-co-ltd-contains-an-out-of-bounds)
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- [Fuji Electric V-SFT out-of-bounds write in V7 file parsing](https://junglewise.ai/threats/cve-2026-107895-v-sft-provided-by-fuji-electric-co-ltd-contains-an-out-of-bounds)