CVE-2021-21966

Name: CVE-2021-21966
Creator: NVD / NIST
Published: 2022-02-16T17:15:10.353+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.36%

Last modified Jun 17, 2026

CVE-2021-21966 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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. EPSS estimates a 1.36% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

1.36%

68.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Ti	Simplelink Cc32xx Software Development Kit	< 5.30.00.08
Ti	Cc3100 Firmware	< 1.0.1.15-2.15.0.1
Ti	Cc3200 Firmware	< 1.0.1.15-2.15.0.1

References

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

Timeline

Published: Feb 16, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21966?

How severe is CVE-2021-21966?

CVE-2021-21966 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.36% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21966?

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-2021-21966?

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

Scan your code now

Source: NVD / NIST