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CVE-2021-22677

HIGH

7.8

CVSS Score

Published: May 7, 2021 at 03:11 PM UTC

Updated: June 17, 2026 at 03:37 AM UTC

7 products affected across 1 vendorSimplelink CC32XX Software Development KitSimplelink CC26XX Software Development KitSimplelink CC13X2 Software Development Kit

Using SimpleLink Wi-Fi, MSP432, CC13XX, CC26XX, CC32XX, CC3100 by N/A?

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Severity

HIGH7.8

Exploit prediction

EPSS 0.3%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

CC3100 Software Development Kit · Ti

95%

v ≤ 1.3.0v < 4.10.03

Affected range stops below 4.10.03, so it looks safe — our inference, not a vendor statement

CC3200 Software Development Kit · Ti

95%

v ≤ 1.5.0v < 4.10.03

Affected range stops below 4.10.03, so it looks safe — our inference, not a vendor statement

Simplelink CC13X0 Software Development Kit · Ti

95%

v < 4.10.03

Affected range stops below 4.10.03, so it looks safe — our inference, not a vendor statement

Simplelink CC13X2 Software Development Kit · Ti

95%

v < 4.10.03v < 4.40.00

Affected range stops below 4.10.03, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.40.00, so it looks safe — our inference, not a vendor statement

Simplelink CC26XX Software Development Kit · Ti

95%

v < 4.10.03v < 4.40.00

Affected range stops below 4.10.03, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.40.00, so it looks safe — our inference, not a vendor statement

Simplelink CC32XX Software Development Kit · Ti

95%

v ≤ 4.30.00.06v < 4.10.03

Affected range stops below 4.10.03, so it looks safe — our inference, not a vendor statement

Simplelink MSP432E4 Software Development Kit · Ti

95%

v ≤ 4.20.00.12v < 4.10.03

Affected range stops below 4.10.03, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_MISCThird Party AdvisoryUS Government Resource

Source: [email protected]

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

CVSS

7.8HIGH[email protected]

Attack Vector: LOCAL
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-190

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