Is CVE-2021-22673 in the CISA KEV catalog?

No. CVE-2021-22673 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-22673?

CVE-2021-22673 has a CVSS v3 base score of 8.0 (HIGH).

What is the EPSS score for CVE-2021-22673?

CVE-2021-22673 has an EPSS score of 1.21% (65th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-22673?

Upgrade simplelink cc13x0 software development kit to 4.10.03 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2021-22673

HIGH

8.0

CVSS v3

NVD

Description

The affected product is vulnerable to stack-based buffer overflow while processing over-the-air firmware updates from the CDN server, which may allow an attacker to remotely execute code 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).

CWE-121Stack-based Buffer Overflow CWE-787Out-of-bounds Write

How to fix

Remediation Available

simplelink cc13x0 software development kitNVD

Affected:< 4.10.03Fixed in:4.10.03CVE-2021-22673derived from NVD

simplelink cc13x2 software development kitNVD

Affected:< 4.40.00Fixed in:4.40.00CVE-2021-22673derived from NVD

simplelink cc26xx software development kitNVD

Affected:< 4.40.00Fixed in:4.40.00CVE-2021-22673derived 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 RequiredLow

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.21%probability of exploitation in 30 days

65thpercentile

Moderate risk: more likely to be exploited than 65% of all known CVEs.

References

Third-Party Advisory1

us-cert.cisa.gov

Related Vulnerabilities

Other CWE-121 (Stack-based Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2009-0927	High	8.8	97%	KEV	Fix
CVE-2020-10924	High	8.8	87%	-	-
CVE-2022-20705	Critical	10.0	80%	-	-

Embed a live status badge for CVE-2021-22673

Markdown

[![CVE-2021-22673](https://tridentstack.com/cve/badge/CVE-2021-22673.svg)](https://tridentstack.com/cve/CVE-2021-22673)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-22673"><img src="https://tridentstack.com/cve/badge/CVE-2021-22673.svg" alt="CVE-2021-22673"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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.