CVE-2021-38421

Name: CVE-2021-38421
Creator: NVD / NIST
Published: 2021-12-20T21:15:08.613+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 0.76%

Last modified Jun 17, 2026

CVE-2021-38421 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. Fuji Electric V-Server Lite and Tellus Lite V-Simulator prior to v4.0.12.0 is vulnerable to an out-of-bounds read, which may allow an attacker to read sensitive information from other memory locations or cause a crash.. EPSS estimates a 0.76% chance of exploitation in the next 30 days.

Description

Fuji Electric V-Server Lite and Tellus Lite V-Simulator prior to v4.0.12.0 is vulnerable to an out-of-bounds read, which may allow an attacker to read sensitive information from other memory locations or cause a crash.

Metrics

CVSS 3.1

7.1/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

EPSS Probability

0.76%

50.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Fujielectric	V-Server	< 4.0.12.0
Fujielectric	V-Simulator	< 4.0.12.0

References

https://www.cisa.gov/uscert/ics/advisories/icsa-21-299-01Patch, Third Party Advisory, US Government Resource
https://www.cisa.gov/uscert/ics/advisories/icsa-21-299-01Patch, Third Party Advisory, US Government Resource

Timeline

Published: Dec 20, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-38421?

How severe is CVE-2021-38421?

CVE-2021-38421 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.76% probability of exploitation in the next 30 days.

How do I fix CVE-2021-38421?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-38421?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST