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Fencer Vulns
high 7.8

CVE-2021-38415 json

Fuji Electric Tellus Lite V-Simulator heap based buffer overflow

published 2021-12-20 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-24867

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 64%
public exploits
0
none known

Summary

Fuji Electric V-Server Lite and Tellus Lite V-Simulator prior to v4.0.12.0 is vulnerable a heap-based buffer overflow when parsing a specially crafted project file, which may allow an attacker to execute arbitrary code.

Patch / fix

  • Fuji Electric V-Server Lite 4.0.12.0
  • Fuji Electric Tellus Lite V-Simulator 4.0.12.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-21-299-01 updated cvss 7.8

Fuji Electric Tellus Lite V-Simulator and V-Server Lite

  • Fuji Electric Tellus Lite V-Simulator < 4.0.12.0 Fuji Electric V-Server Lite < 4.0.12.0
    affected: mitigation “TELLUS Lite software: Version 4.0.12.0 Disk1” felib.fujielectric.co.jp

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

1.04% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • Fuji Electric V-Server Lite
  • Fuji Electric Tellus Lite V-Simulator

Classification

Weakness
  • CWE-122 Heap-based Buffer Overflow

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.