Is CVE-2021-21966 in the CISA KEV catalog?

No. CVE-2021-21966 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-21966?

CVE-2021-21966 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2021-21966?

CVE-2021-21966 has an EPSS score of 1.36% (68th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-21966?

Upgrade cc3100 firmware to 1.0.1.15-2.15.0.1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2021-21966

MEDIUM

5.3

CVSS v3

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.

CWE-457 CWE-908

How to fix

Remediation Available

cc3100 firmwareNVD

Affected:< 1.0.1.15-2.15.0.1Fixed in:1.0.1.15-2.15.0.1CVE-2021-21966derived from NVD

cc3200 firmwareNVD

Affected:< 1.0.1.15-2.15.0.1Fixed in:1.0.1.15-2.15.0.1CVE-2021-21966derived from NVD

simplelink cc32xx software development kitNVD

Affected:< 5.30.00.08Fixed in:5.30.00.08CVE-2021-21966derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

1.36%probability of exploitation in 30 days

68thpercentile

Moderate risk: more likely to be exploited than 68% of all known CVEs.

References

Exploit1

talosintelligence.com

Vendor Advisory1

ti.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.