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No exploitation reportedFix available

CVE-2021-22641

No exploitation reported by the sources we read.

  • Published2021-01-27
  • Fixed in4.0.10.0
  • WeaknessCWE-122 · CWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A heap-based buffer overflow issue has been identified in the way the application processes project files, allowing an attacker to craft a special project file that may allow arbitrary code execution on the Tellus Lite V-Simulator and V-Server Lite (versions prior to 4.0.10.0).

Timeline

dates in UTC
  1. 2021-01-2720:15CVE publishedNVD

Versions per branch

NVD
Fujielectric v-server
BranchAffectedFixed in
4.0< 4.0.10.04.0.10.0
Fujielectric v-simulator
BranchAffectedFixed in
4.0< 4.0.10.04.0.10.0

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • ICSA-21-026-01 CISA2 known affected

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

    Tellus Lite V-Simulator: Versions prior to v4.0.10.0 · V-Server Lite: Versions prior to v4.0.10.0

Full record on NVD

Fix

  1. Update Fujielectric v-server to 4.0.10.0
  2. Mitigation from the vendor CISA ICSA-21-026-01 · 2 productsFuji Electric recommends updating to the current version v4.0.10.0. Both disks are required for updating. Login is required to download the files.
  3. Mitigation from the vendor CISA ICSA-21-026-01 · 2 productsv4.0.10.0 Disk 1
  4. Mitigation from the vendor CISA ICSA-21-026-01 · 2 productsv4.0.10.0 Disk 2

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.17.8read 2026-10-23
  • NVDCVSS 2.06.8read 2026-10-23
  • CNAweakness (CWE)CWE-122known since 2026-10-23
  • NVDweakness (CWE)CWE-787read 2026-10-23
  • FIRST EPSSEPSS score2.2 %2026-11-09
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2021-01-27
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-wff6-cjwj-3wrr

Frequently asked questions

What is CVE-2021-22641?

A heap-based buffer overflow issue has been identified in the way the application processes project files, allowing an attacker to craft a special project file that may allow arbitrary code execution on the Tellus Lite V-Simulator and V-Server Lite (versions prior to 4.0.10.0).

Is CVE-2021-22641 actively exploited?

Active exploitation of CVE-2021-22641 has not been confirmed. Its EPSS score was 2.2% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-22641?

CVE-2021-22641 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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