CVE-2023-50096
CVE-2023-50096 is a high-severity vulnerability in St X-cube-safea1 with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- EPSS exploit prediction: 1% (44th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2023-54926
- Weakness: CWE-120
- Affected product: St X-cube-safea1
- Published:
- Last modified:
Description
STMicroelectronics STSAFE-A1xx middleware before 3.3.7 allows MCU code execution if an adversary has the ability to read from and write to the I2C bus. This is caused by an StSafeA_ReceiveBytes buffer overflow in the X-CUBE-SAFEA1 Software Package for STSAFE-A sample applications (1.2.0), and thus can affect user-written code that was derived from a published sample application.
Frequently asked questions
- What is CVE-2023-50096?
- STMicroelectronics STSAFE-A1xx middleware before 3.3.7 allows MCU code execution if an adversary has the ability to read from and write to the I2C bus. This is caused by an StSafeA_ReceiveBytes buffer overflow in the X-CUBE-SAFEA1 Software Package for STSAFE-A sample applications (1.2.0), and thus can affect user-written code that was derived from a published sample application.
- How severe is CVE-2023-50096?
- CVE-2023-50096 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2023-50096 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-50096?
- CVE-2023-50096 affects St X-cube-safea1. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-50096?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2023-50096 have an EU (EUVD) identifier?
- Yes. CVE-2023-50096 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-54926.
- When was CVE-2023-50096 published?
- CVE-2023-50096 was published on 2024-01-01 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:st:x-cube-safea1:1.2.0:*:*:*:*:stsafe-a:*:*
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