What is the CVSS score of CVE-2019-14238?

CVE-2019-14238 has a CVSS 3.1 base score of 6.6 (Medium). CVSS vector: CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.4%.

Is there a public PoC exploit available for CVE-2019-14238?

Yes, a public proof-of-concept exploit is available for CVE-2019-14238. Prioritise patching immediately. EPSS: 0.4%.

Stm32L0 Firmware CVE-2019-14238

MEDIUM

Improper Authentication (CWE-287)

2019-09-24 cve@mitre.org

Authentication Bypass Stm32L0 Firmware Stm32L1 Firmware Stm32F4 Firmware Stm32L4 Firmware Stm32F7 Firmware Stm32H7 Firmware

6.6

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.6 MEDIUM

AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Physical

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Sep 24, 2019 - 18:15 nvd

MEDIUM 6.6

DescriptionNVD

AnalysisAI

On STMicroelectronics STM32F7 devices, Proprietary Code Read Out Protection (PCROP) (a software IP protection method) can be defeated with a debug probe via the Instruction Tightly Coupled Memory. Rated medium severity (CVSS 6.6), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Improper Authentication (CWE-287), which allows attackers to bypass authentication mechanisms to gain unauthorized access. On STMicroelectronics STM32F7 devices, Proprietary Code Read Out Protection (PCROP) (a software IP protection method) can be defeated with a debug probe via the Instruction Tightly Coupled Memory (ITCM) bus. Affected products include: St Stm32L0 Firmware, St Stm32L1 Firmware, St Stm32F4 Firmware, St Stm32L4 Firmware, St Stm32F7 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement multi-factor authentication, enforce strong password policies, use proven authentication frameworks.