EUVD-2025-20479Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionCVE.org
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.
Analysis
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.
Technical ContextAI
A buffer overflow occurs when data written to a buffer exceeds its allocated size, potentially overwriting adjacent memory and corrupting program state. This vulnerability is classified as Heap-based Buffer Overflow (CWE-122).
RemediationAI
Use memory-safe languages or bounds-checked functions. Enable ASLR, DEP/NX, and stack canaries. Apply vendor patches promptly.
Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Heap Overflow
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External POC / Exploit Code
Leaving vuln.today