CVE-2022-40760

Name: CVE-2022-40760
Creator: NVD / NIST
Published: 2022-09-16T22:15:12.473+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.05%

Last modified Jun 17, 2026

CVE-2022-40760 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A Buffer Access with Incorrect Length Value vulnerablity in the TEE_MACUpdate function in Samsung mTower through 0.3.0 allows a trusted application to trigger a Denial of Service (DoS) by invoking the function TEE_MACUpdate with an excessive size value of chunkSize.. EPSS estimates a 1.05% chance of exploitation in the next 30 days.

Description

A Buffer Access with Incorrect Length Value vulnerablity in the TEE_MACUpdate function in Samsung mTower through 0.3.0 allows a trusted application to trigger a Denial of Service (DoS) by invoking the function TEE_MACUpdate with an excessive size value of chunkSize.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.05%

60.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Samsung	Mtower	<= 0.3.0

References

https://github.com/Samsung/mTower/blob/efd36709306a9afcca5b4782499d01be0c7a02a5/crypto/libtomcrypt/include/tomcrypt_hash.h#L397Patch, Third Party Advisory
https://github.com/Samsung/mTower/blob/efd36709306a9afcca5b4782499d01be0c7a02a5/tee/lib/libutee/tee_api_operations.c#L1188Patch, Third Party Advisory
https://github.com/Samsung/mTower/issues/81Third Party Advisory
https://github.com/Samsung/mTower/blob/efd36709306a9afcca5b4782499d01be0c7a02a5/crypto/libtomcrypt/include/tomcrypt_hash.h#L397Patch, Third Party Advisory
https://github.com/Samsung/mTower/blob/efd36709306a9afcca5b4782499d01be0c7a02a5/tee/lib/libutee/tee_api_operations.c#L1188Patch, Third Party Advisory
https://github.com/Samsung/mTower/issues/81Third Party Advisory

Timeline

Published: Sep 16, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-40760?

How severe is CVE-2022-40760?

CVE-2022-40760 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.05% probability of exploitation in the next 30 days.

How do I fix CVE-2022-40760?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-40760?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST