What’s Vulnerable › Vulnerabilities

CVE-2021-21966

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-02-16 · updated 2026-06-17
• Weakness: CWE-457

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.

Affected products

• Ti Cc3100 Firmware: before 1.0.1.15-2.15.0.1 — fixed in 1.0.1.15-2.15.0.1
• Ti Cc3200 Firmware: before 1.0.1.15-2.15.0.1 — fixed in 1.0.1.15-2.15.0.1
• Ti Simplelink Cc32Xx Software Development Kit: before 5.30.00.08 — fixed in 5.30.00.08

How to fix

Upgrade to a fixed version: Ti Cc3100 Firmware 1.0.1.15-2.15.0.1; Ti Cc3200 Firmware 1.0.1.15-2.15.0.1; Ti Simplelink Cc32Xx Software Development Kit 5.30.00.08. Check the vendor advisory for mitigations.

References

• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1393
• https://www.ti.com/lit/an/swra740/swra740.pdf?ts=1645536893264&
• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1393

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