No exploitation reportedFix available

CVE-2015-5684

Q: Is CVE-2015-5684 actively exploited?

Active exploitation of CVE-2015-5684 has not been confirmed. Its EPSS score was 3.7% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2015-5684?

CVE-2015-5684 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2020-03-27
Fixed inb9cn17ww · a9cn46ww
WeaknessCWE-120

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC

2020-03-2715:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2015-5684?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2015-5684?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Lenovo edge 15 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	< b9cn17ww	b9cn17ww	NVD
—	< a9cn46ww	a9cn46ww	NVD

Lenovo flex 2 pro-15 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	< b9cn17ww	b9cn17ww	NVD
—	< a9cn46ww	a9cn46ww	NVD

Lenovo b50-10 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	< cccn13ww\(v1.02\)	cccn13ww\(v1.02\)	NVD

24 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Lenovo edge 15 firmware to b9cn17ww · a9cn46ww

Advisories and patches

support.lenovo.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.19.8read 2026-10-23
NVDCVSS 2.010read 2026-10-23
NVDweakness (CWE)CWE-120read 2026-10-23
FIRST EPSSEPSS score3.7 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2020-03-27
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2015-5684?

Is CVE-2015-5684 actively exploited?

Active exploitation of CVE-2015-5684 has not been confirmed. Its EPSS score was 3.7% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2015-5684?

CVE-2015-5684 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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