What’s Vulnerable › Vulnerabilities

CVE-2021-22677

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-05-07 · updated 2026-06-17
• Weakness: CWE-190

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).

Affected products

• Ti Cc3100 Software Development Kit: through 1.3.0
• Ti Cc3200 Software Development Kit: through 1.5.0
• Ti Simplelink Cc13X0 Software Development Kit: before 4.10.03 — fixed in 4.10.03
• Ti Simplelink Cc13X2 Software Development Kit: before 4.40.00 — fixed in 4.40.00
• Ti Simplelink Cc26Xx Software Development Kit: before 4.40.00 — fixed in 4.40.00
• Ti Simplelink Cc32Xx Software Development Kit: through 4.30.00.06
• Ti Simplelink Msp432E4 Software Development Kit: through 4.20.00.12

How to fix

Upgrade to a fixed version: 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. Check the vendor advisory for mitigations.

References

• https://us-cert.cisa.gov/ics/advisories/icsa-21-119-01
• https://us-cert.cisa.gov/ics/advisories/icsa-21-119-01

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