HOMEVULNERABILITIESCVE-2016-5247
HIGH

CVE-2016-5247

CWE-254Published: September 22, 2016· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

The BIOS for Lenovo ThinkCentre E93, M6500t/s, M6600, M6600q, M6600t/s, M73p, M800, M83, M8500t/s, M8600t/s, M900, M93, and M93P devices; ThinkServer RQ940, RS140, TS140, TS240, TS440, and TS540 devices; and ThinkStation E32, P300, and P310 devices might allow local users or physically proximate attackers to bypass the Secure Boot protection mechanism by leveraging an AMI test key.

NVD Source

Technical Analysis

CVE-2016-5247 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Lenovo23 product(s)
biosthinkcentre e93thinkcentre m6500t\/sthinkcentre m6600thinkcentre m6600qthinkcentre m6600t\/sthinkcentre m73pthinkcentre m800thinkcentre m83thinkcentre m8500t\/sthinkcentre m8600t\/sthinkcentre m900+11
Source: NVD CPE · 23 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://www.securityfocus.com/bid/92661
ADVISORYhttps://support.lenovo.com/product_security/PS500067
ADVISORYhttp://www.securityfocus.com/bid/92661
ADVISORYhttps://support.lenovo.com/product_security/PS500067

All References (4)

→
http://www.securityfocus.com/bid/92661Third Party Advisory
→
https://support.lenovo.com/product_security/PS500067Mitigation · Vendor Advisory
→
http://www.securityfocus.com/bid/92661Third Party Advisory
→
https://support.lenovo.com/product_security/PS500067Mitigation · Vendor Advisory

Quick Facts

CVE IDCVE-2016-5247
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-254
CISA KEVNo
Affected1 vendor(s)
PublishedSep 22, 2016

Related CVEs (CWE-254)

CVE-2015-1158
10.0
CVE-2015-3972
10.0
CVE-2016-5788
10.0
CVE-2016-4215
9.8
CVE-2016-1896
9.8
CVE-2015-7554
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2016-5247 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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