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CVE-2023-50096

22
FAUCET Score

CVE-2023-50096 is a buffer overflow vulnerability in the STMicroelectronics STSAFE-A1xx middleware (before 3.3.7), specifically within the StSafeA_ReceiveBytes function of the X-CUBE-SAFEA1 Software Package. This flaw allows for MCU code execution if an attacker can read from and write to the I2C bus, impacting user-written code derived from affected sample applications. With a CVSS score of 7.5 (HIGH), this vulnerability has an adjacent attack vector, high attack complexity, and high impacts on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.2.0CPE matchmatch criteria
cpe:2.3:a:st:x-cube-safea1:1.2.0:*:*:*:*:stsafe-a:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.6
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.60%
Probability of exploitation in next 30 days
EPSS Percentile
44.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0060 is in the 55th percentile among its peer group of 239 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 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 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / elttam/publications/blob/master/writeups/CVE-2023-50096.md
ExploitThird Party Advisory