Buffer overflow in St X-Cube-Safea1
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (46.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- St X-Cube-Safea1 — versions 1.2.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/elttam/publications/blob/master/writeups/CVE-2023-50096.md (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-50096?
- CVE-2023-50096 is a high-severity vulnerability in St X-Cube-Safea1, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2024-01-01.
- How severe is CVE-2023-50096?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-50096 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.