CVE-2021-43933

Name: CVE-2021-43933
Creator: NVD / NIST
Published: 2022-04-20T16:15:08.06+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 0.65%

Last modified Jun 17, 2026

CVE-2021-43933 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. The affected product is vulnerable to a network-based attack by threat actors sending unimpeded requests to the receiving server, which could cause a denial-of-service condition due to lack of heap memory resources.. EPSS estimates a 0.65% chance of exploitation in the next 30 days.

Description

The affected product is vulnerable to a network-based attack by threat actors sending unimpeded requests to the receiving server, which could cause a denial-of-service condition due to lack of heap memory resources.

Metrics

CVSS 3.1

5.9/10

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

EPSS Probability

0.65%

46.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-400

Affected Software

Vendor	Product	Versions
Fanuc	Roboguide	<= 9.40083.00.05

References

https://www.cisa.gov/uscert/ics/advisories/icsa-22-109-03Patch, Third Party Advisory, US Government Resource
https://www.cisa.gov/uscert/ics/advisories/icsa-22-109-03Patch, Third Party Advisory, US Government Resource

Timeline

Published: Apr 20, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-43933?

How severe is CVE-2021-43933?

CVE-2021-43933 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 0.65% probability of exploitation in the next 30 days.

How do I fix CVE-2021-43933?

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-2021-43933?

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

Scan your code now

Source: NVD / NIST