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CVE-2021-22673

25
FAUCET Score

CVE-2021-22673 describes a stack-based buffer overflow vulnerability in Texas Instruments SimpleLink Wi-Fi SDKs (including MSP432E4, CC32XX, CC13X0, CC13X2, CC26XX, CC3200, and CC3100) that occurs during over-the-air firmware updates. This flaw, rated 8.0 HIGH CVSS, allows a remote attacker to execute arbitrary code with high impact on confidentiality, integrity, and availability, requiring low privileges and user interaction. While the vulnerability is significant, there is currently no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or notable community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.3.0CPE matchmatch criteria
cpe:2.3:a:ti:cc3100_software_development_kit:*:*:*:*:*:*:*:*
<= 1.5.0CPE matchmatch criteria
cpe:2.3:a:ti:cc3200_software_development_kit:*:*:*:*:*:*:*:*
< 4.10.03CPE matchmatch criteria
cpe:2.3:a:ti:simplelink_cc13x0_software_development_kit:*:*:*:*:*:*:*:*
< 4.40.00CPE matchmatch criteria
cpe:2.3:a:ti:simplelink_cc13x2_software_development_kit:*:*:*:*:*:*:*:*
< 4.40.00CPE matchmatch criteria
cpe:2.3:a:ti:simplelink_cc26xx_software_development_kit:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.0HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.1
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.21%
Probability of exploitation in next 30 days
EPSS Percentile
65.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0121 is in the 82nd percentile among its peer group of 890 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

us-cert.cisa.gov / ics/advisories/icsa-21-119-01
Third Party AdvisoryUS Government Resource