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CVE-2023-28391

27
FAUCET Score

CVE-2023-28391 is a critical memory corruption vulnerability affecting Weston Embedded uC-HTTP v3.01.01 and related Silicon Labs products. This flaw allows an unauthenticated attacker to achieve remote code execution by sending specially crafted HTTP server header packets. With a CVSS score of 9.8, it poses a severe risk due to its network-based attack vector, low complexity, and high impact on confidentiality, integrity, and availability. While no public exploits or active exploitation have been observed, and community discussion is minimal, its high FAUCET Risk Score of 78/100 warrants immediate attention.

Impacted Technologies

VendorProductVersion(s)CPE
4.3.1CPE matchmatch criteria
cpe:2.3:a:silabs:gecko_software_development_kit:4.3.1:*:*:*:*:*:*:*
3.07.01CPE matchmatch criteria
cpe:2.3:a:weston-embedded:cesium_net:3.07.01:*:*:*:*:*:*:*
3.01.01CPE matchmatch criteria
cpe:2.3:a:weston-embedded:uc-http:3.01.01:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.0CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.47%
Probability of exploitation in next 30 days
EPSS Percentile
71.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0147 is in the 58th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

talosintelligence.com / vulnerability_reports/TALOS-2023-1732
talosintelligence.com / vulnerability_reports/TALOS-2023-1732
ExploitTechnical DescriptionThird Party Advisory