CVE-2021-22641

mediumpriority · track · 32EPSS 0.022 · 82 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.15% (82nd) EPSS

CVSS 6.8 · medium

Is it mine?

7 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-28

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).

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

No vendor fix yet; a mitigation is available.

MitigationTellus Lite V-Simulatorcisa_csaf_ot
Fuji Electric recommends updating to the current version v4.0.10.0. Both disks are required for updating. Login is required to download the files.
MitigationV-Server Litecisa_csaf_ot
Fuji Electric recommends updating to the current version v4.0.10.0. Both disks are required for updating. Login is required to download the files.

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–7.8

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.07.8highCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · CISA US

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-122USCWE-122US

affected products (7)

Products and version ranges known to be affected.

Tellus Lite V-Simulator: Versions prior to v4.0.10.0all versionscisa_csaf_otUS
V-Server Lite: Versions prior to v4.0.10.0all versionscisa_csaf_otUS
Fuji Electric Tellus Lite V-Simulator< 4.0.10.0cisa_csaf_otUS
Fuji Electric V-Server Lite< 4.0.10.0cisa_csaf_otUS
n/a Tellus Lite V-Simulator and V-Server Lite≤ Versions prior to 4.0.10.0enisa_euvdEU
fujielectric v-server< 4.0.10.0nvdUScpe:2.3:a:fujielectric:v-server:*:*:*:*:*:*:*:*
fujielectric v-simulator< 4.0.10.0nvdUScpe:2.3:a:fujielectric:v-simulator:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-21-026-01Fuji Electric Tellus Lite V-Simulator and V-Server Lite2021-01-26icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could allow an attacker to execute code under the privileges of the application.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd NVD CVE.org MITRE

published 2021-01-27modified 2026-06-17

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+16138 more

references (9)

External citations — patches, advisories, analysis.

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