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Vulnerability record · CVE-2021-21966 · published 16 February 2022

CVE-2021-21966: Ti simplelink cc32xx software development kit use of uninitialized resource vulnerability

TTi · Simplelink Cc32xx Software Development Kit

An information disclosure vulnerability exists in the HTTP Server /ping.html functionality of Texas Instruments CC3200 SimpleLink Solution NWP 2.9.0.0. A specially-crafted HTTP request can lead to an uninitialized read. An attacker can send an HTTP request to trigger this vulnerability.

5.3 CVSS 3.1 Medium EPSS 1.4% · top 28.9% CWE-457 · CWE-457CWE-908 · Use of uninitialized resource
5.3CVSS 3.1 base score, v2 5.0
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
3References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

An information disclosure vulnerability exists in the HTTP Server /ping.html functionality of Texas Instruments CC3200 SimpleLink Solution NWP 2.9.0.0. A specially-crafted HTTP request can lead to an uninitialized read. An attacker can send an HTTP request to trigger this vulnerability.

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1393 ExploitThird Party Advisory
https://www.ti.com/lit/an/swra740/swra740.pdf?ts=1645536893264& Vendor Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1393 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-22671Ti cc3100 software development kit integer overflow vulnerabilityMultiple integer overflow issues exist while processing long domain names, which may allow an attacker to remotely execute code on the SimpleLink Wi-…EPSS 1.8%9.8CVE-2021-22679Ti cc3100 software development kit integer overflow vulnerabilityThe affected product is vulnerable to an integer overflow while processing HTTP headers, which may allow an attacker to remotely execute code on the …EPSS 1.8%8.0CVE-2021-22673Ti cc3100 software development kit stack-based buffer overflow vulnerabilityThe affected product is vulnerable to stack-based buffer overflow while processing over-the-air firmware updates from the CDN server, which may allow…EPSS 1.2%7.8CVE-2021-27502Real-time operating system integer overflow vulnerabilityTexas Instruments TI-RTOS, when configured to use HeapMem heap(default), malloc returns a valid pointer to a small buffer on extremely large values, …EPSS 0.28%7.8CVE-2021-27504Amazon freertos integer overflow vulnerabilityTexas Instruments devices running FREERTOS, malloc returns a valid pointer to a small buffer on extremely large values, which can trigger an integer …EPSS 0.28%7.8CVE-2021-22636Real-time operating system integer overflow vulnerabilityTexas Instruments TI-RTOS, when configured to use HeapMem heap(default), malloc returns a valid pointer to a small buffer on extremely large values, …EPSS 0.28%7.8CVE-2021-27429Real-time operating system integer overflow vulnerabilityTexas Instruments TI-RTOS returns a valid pointer to a small buffer on extremely large values. This can trigger an integer overflow vulnerability in …EPSS 0.28%7.8CVE-2021-22677Ti cc3100 software development kit integer overflow vulnerabilityAn 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 condi…EPSS 0.30%

Source: NIST National Vulnerability Database (record CVE-2021-21966), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.