What is the CVSS score of CVE-2019-14236?

CVE-2019-14236 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 2.3%.

Is there a public PoC exploit available for CVE-2019-14236?

Yes, a public proof-of-concept exploit is available for CVE-2019-14236. Prioritise patching immediately. EPSS: 2.3%.

Stm32L0 Firmware CVE-2019-14236

CRITICAL

Incorrect Authorization (CWE-863)

2019-09-12 cve@mitre.org

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

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Sep 12, 2019 - 18:15 nvd

CRITICAL 9.8

DescriptionNVD

AnalysisAI

On STMicroelectronics STM32L0, STM32L1, STM32L4, STM32F4, STM32F7, and STM32H7 devices, Proprietary Code Read Out Protection (PCROP) (a software IP protection method) can be defeated by observing CPU. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Incorrect Authorization (CWE-863), which allows attackers to bypass authorization checks to access restricted resources. On STMicroelectronics STM32L0, STM32L1, STM32L4, STM32F4, STM32F7, and STM32H7 devices, Proprietary Code Read Out Protection (PCROP) (a software IP protection method) can be defeated by observing CPU registers and the effect of code/instruction execution. 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. Review and test authorization logic, implement consistent access control checks, use centralized authorization framework.