CVE-2021-22684

Name: CVE-2021-22684
Creator: NVD / NIST
Published: 2021-08-31T17:15:07.663+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.10%

Last modified Jun 17, 2026

CVE-2021-22684 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Tizen RT RTOS version 3.0.GBB is vulnerable to integer wrap-around in functions_calloc and mm_zalloc. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash. EPSS estimates a 1.10% chance of exploitation in the next 30 days.

Description

Tizen RT RTOS version 3.0.GBB is vulnerable to integer wrap-around in functions_calloc and mm_zalloc. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.10%

61.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-190

Affected Software

Vendor	Product	Versions
Samsung	Tizenrt	<= 3.0

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-119-04Third Party Advisory, US Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-21-119-04Third Party Advisory, US Government Resource

Timeline

Published: Aug 31, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-22684?

How severe is CVE-2021-22684?

CVE-2021-22684 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.10% probability of exploitation in the next 30 days.

How do I fix CVE-2021-22684?

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-2021-22684?

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

Scan your code now

Source: NVD / NIST