What is CVE-2022-40758?

CVE-2022-40758 is a high-severity vulnerability in Samsung Mtower, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2022-09-16.

How severe is CVE-2022-40758?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Samsung Mtower

CVE-2022-40758

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

Vulnerability class: Buffer Overflow

Published 2022-09-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.010 (62.2th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.010 · change: +0.001

Affected products

Samsung Mtower

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

github.com/Samsung/mTower/issues/81 (Third Party Advisory)
github.com/Samsung/mTower/blob/efd36709306a9afcca5b4782499d01be0c7a02a5/tee/lib… (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-40758?: CVE-2022-40758 is a high-severity vulnerability in Samsung Mtower, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2022-09-16.
How severe is CVE-2022-40758?: High severity. CVSS v3 base score is 7.5 out of 10.