What is CVE-2015-5684?

CVE-2015-5684 is a critical-severity vulnerability in Lenovo B50-10, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2020-03-27.

How severe is CVE-2015-5684?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Lenovo B50-10

CVE-2015-5684

MITRE is populating this ID because it was assigned prior to Lenovo becoming a CNA. A buffer overflow vulnerability was reported, (fixed and publicly disclosed in 2015) in the Lenovo Service Engine (LSE), affecting various versions of BIOS for Lenovo Notebooks, that could allow a remote user to execute arbitrary code on the system.

Vulnerability class: Buffer Overflow

Published 2020-03-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.037 (89.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.037 · newest: 0.037 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

support.lenovo.com/us/en/product_security/lse_bios_notebook (Vendor Advisory)

Frequently asked questions

What is CVE-2015-5684?: CVE-2015-5684 is a critical-severity vulnerability in Lenovo B50-10, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2020-03-27.
How severe is CVE-2015-5684?: Critical severity. CVSS v3 base score is 9.8 out of 10.