What is the CVSS score of CVE-2021-43619?

CVE-2021-43619 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

Is there a public PoC exploit available for CVE-2021-43619?

Yes, a public proof-of-concept exploit is available for CVE-2021-43619. Prioritise patching immediately. EPSS: 0.2%.

Is there a patch available for CVE-2021-43619?

Yes, a patch is available for CVE-2021-43619. Update the affected software to the latest version immediately.

Trusted Firmware M CVE-2021-43619

HIGH

Classic Buffer Overflow (CWE-120)

2022-03-01 cve@mitre.org

Buffer Overflow Trusted Firmware M

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Mar 01, 2022 - 05:15 cve.org

HIGH 7.8

DescriptionCVE.org

Trusted Firmware M 1.4.x through 1.4.1 has a buffer overflow issue in the Firmware Update partition. In the IPC model, a psa_fwu_write caller from SPE or NSPE can overwrite stack memory locations.

AnalysisAI

Trusted Firmware M 1.4.x through 1.4.1 has a buffer overflow issue in the Firmware Update partition. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. Trusted Firmware M 1.4.x through 1.4.1 has a buffer overflow issue in the Firmware Update partition. In the IPC model, a psa_fwu_write caller from SPE or NSPE can overwrite stack memory locations. Affected products include: Trustedfirmware Trusted Firmware-M. Version information: through 1.4.1.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.