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E42 80 Firmware CVE-2018-9069

MEDIUM
Race Condition (CWE-362)
2018-10-02 psirt@lenovo.com
Information Disclosure Race Condition HP Lenovo E42 80 Firmware E52 80 Firmware V310 14Ikb Firmware V310 14Isk Firmware V310 15Ikb Firmware V310 15Isk Firmware V510 14Ikb Firmware V510 15Ikb Firmware 310S 14Isk Firmware 320 15Ikbra Firmware 320 15Ikbrn Firmware 320 15Ikbrn Touch Firmware 320 17Ikbrn 320S 14Ikb 320S 15Ikb Firmware 320S 15Isk Firmware 510S 14Isk Firmware 520 15Ikbrn Firmware 520S 14Ikb Firmware 710S Plus 13Ikb 16G Firmware 710S Plus 3Ikb Firmware Xiaoxinair13Ikbpro Firmware 710S Plus Touch 13Ikb Firmware 720S 13Ikb Firmware B320 14Ikb Firmware Flex 4 1470 Firmware Flex 5 1470 Firmware Flex 5 1570 Firmware Ideapad 2In1 14 Firmware Lenovo Ideapad 320 14Ikb I A Firmware Lenovo Ideapad 320 14Ikb I N Firmware Lenovo Ideapad 320 15Abr Firmware Lenovo Ideapad 320 15Ikb I N Firmware Lenovo Ideapad 320S 14Ikbr Firmware Lenovo Ideapad 320S 15Ikbr Firmware Lenovo Ideapad 520S 14Ikbr Firmware Lenovo Ideapad 720S 14Ikb Firmware Lenovo Ideapad Flex 5 1470 Firmware Lenovo Ideapad Flex 5 1570 Firmware Lenovo Ideapad Y520 15Ikbn Firmware Lenovo Tianyi 310 14Ikb Firmware Lenovo Tianyi 310 15Ikb Firmware Lenovo Y520 15Ikba Firmware Lenovo Y520 15Ikbm Firmware Lenovo Yoga 520 14Ikb Firmware Lenovo Yoga 520 15Ikb Firmware Miix 720 12Ikb Nano110 14Ikb Firmware Nano110 15Ikb Firmware Rescuer R720 15Ikbm Firmware Rescuer Y520 15Ikbm Firmware V330 14Ikb Firmware V330 14Isk Firmware Yoga 310 11Iap Firmware Yoga 510 14Isk Firmware Yoga 720 13Ikb Firmware Yoga 720 13Ikbr Firmware Yoga 720 15Ikb Firmware Lenovo V720 14 Firmware 7000 U42 Firmware 7000 15 U42 Firmware R720 15Ikba Firmware Y520 15Ikba Firmware R720 15Ikbn Firmware Y520 15Ikbn Firmware Y720 15Ikb Firmware Lenovo Y720 15Ikb Firmware E43 80 Kbl Firmware
5.9
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V15 - Secure Coding and Architecture Concurrency control, locking
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 5.9 (MEDIUM). Attack characteristics: network attack vector, high complexity, high privileges required, no user interaction not required.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.5% exploitation probability (EPSS)

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AnalysisAI

In some Lenovo IdeaPad consumer notebook models, a race condition in the BIOS flash device locking mechanism is not adequately protected against, potentially allowing an attacker with administrator. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-362. In some Lenovo IdeaPad consumer notebook models, a race condition in the BIOS flash device locking mechanism is not adequately protected against, potentially allowing an attacker with administrator access to alter the contents of BIOS. Affected products include: Hp 310S-14Isk Firmware, Hp 320-15Ikbra Firmware, Hp 320-15Ikbrn Firmware, Hp 320-15Ikbrn Touch Firmware, Hp 320-17Ikbrn.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 5.9 MEDIUM
AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High

DescriptionNVD

In some Lenovo IdeaPad consumer notebook models, a race condition in the BIOS flash device locking mechanism is not adequately protected against, potentially allowing an attacker with administrator access to alter the contents of BIOS.

Threat Intelligence Overview

EPSS Score
0.5%
Top 59% exploitable
Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.5%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

31
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +30
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Race conditions occur when multiple concurrent requests exploit the brief time gap between checking a condition and acting upon it (TOCTOU - Time of Check, Time of Use).

Affected Products (CPE)NVD

cpe:2.3:o:hp:310s-14isk_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:320-15ikbra_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:320-15ikbrn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:320-15ikbrn_touch_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:hp:320-17ikbrn:*:*:*:*:*:*:*:*
cpe:2.3:h:hp:320s-14ikb:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:320s-15ikb_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:320s-15isk_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:510s-14isk_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:520-15ikbrn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:520s-14ikb_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:710s_plus-13ikb_16g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:710s_plus-3ikb_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:xiaoxinair13ikbpro_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:710s_plus_touch-13ikb_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:720s-13ikb_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:b320-14ikb_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:e42-80_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:e52-80_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:flex_4-1470_firmware:*:*:*:*:*:*:*:*
+ 48 more

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