CVE-2021-22677

Name: CVE-2021-22677
Creator: NVD / NIST
Published: 2021-05-07T16:15:08.003+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.30%

Last modified Jun 17, 2026

CVE-2021-22677 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. An integer overflow exists in the APIs of the host MCU while trying to connect to a WIFI network may lead to issues such as a denial-of-service condition or code execution on the SimpleLink Wi-Fi (MSP432E4 SDK: v4.20.00.12 and prior, CC32XX SDK v4.30.00.06 and prior, CC13X0 SDK versions prior to v4.10.03, CC13X2 and CC26XX SDK versions prior to v4.40.00, CC3200 SDK v1.5.0 and prior, CC3100 SDK v1.3.0 and prior).. EPSS estimates a 0.30% chance of exploitation in the next 30 days.

Description

An integer overflow exists in the APIs of the host MCU while trying to connect to a WIFI network may lead to issues such as a denial-of-service condition or code execution on the SimpleLink Wi-Fi (MSP432E4 SDK: v4.20.00.12 and prior, CC32XX SDK v4.30.00.06 and prior, CC13X0 SDK versions prior to v4.10.03, CC13X2 and CC26XX SDK versions prior to v4.40.00, CC3200 SDK v1.5.0 and prior, CC3100 SDK v1.3.0 and prior).

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.30%

21.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-190

Affected Software

Vendor	Product	Versions
Ti	Cc3100 Software Development Kit	<= 1.3.0
Ti	Cc3200 Software Development Kit	<= 1.5.0
Ti	Simplelink Cc13x0 Software Development Kit	< 4.10.03
Ti	Simplelink Cc13x2 Software Development Kit	< 4.40.00
Ti	Simplelink Cc26xx Software Development Kit	< 4.40.00
Ti	Simplelink Cc32xx Software Development Kit	<= 4.30.00.06
Ti	Simplelink Msp432e4 Software Development Kit	<= 4.20.00.12

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-119-01Third Party Advisory, US Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-21-119-01Third Party Advisory, US Government Resource

Timeline

Published: May 7, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-22677?

How severe is CVE-2021-22677?

CVE-2021-22677 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.30% probability of exploitation in the next 30 days.

How do I fix CVE-2021-22677?

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-2021-22677?

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

Scan your code now

Source: NVD / NIST