What is the CVSS score of CVE-2022-31226?

CVE-2022-31226 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

Is there a patch available for CVE-2022-31226?

Yes, a patch is available for CVE-2022-31226. Update the affected software to the latest version immediately.

Chengming 3900 Firmware CVE-2022-31226

HIGH

Stack-based Buffer Overflow (CWE-121)

2022-09-12 security_alert@emc.com

RCE Buffer Overflow Stack Overflow Dell Chengming 3900 Firmware Inspiron 14 Plus 7420 Firmware Precision 5770 Firmware Inspiron 16 Plus 7620 Firmware Inspiron 3910 Firmware Optiplex 3000 Thin Client Firmware Vostro 3710 Firmware Vostro 3910 Firmware Vostro 7620 Firmware Vostro 5620 Firmware Vostro 5320 Firmware Precision 3460 Small Form Factor Firmware Xps 17 9720 Firmware Inspiron 5320 Firmware Inspiron 5420 Firmware Inspiron 5620 Firmware Inspiron 7420 Firmware Inspiron 7620 Firmware Optiplex 3000 Firmware Optiplex 5000 Firmware Optiplex 5400 Firmware Optiplex 7000 Firmware Optiplex 7000 Oem Firmware Optiplex 7400 Firmware Precision 3660 Tower Firmware

7.8

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-121 ASVS 5.0 V15 - Secure Coding and Architecture Stack buffer bounds checking MITRE ATT&CK 1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 7.8 (HIGH). Attack characteristics: local attack vector, low complexity, low privileges required, no user interaction not required.
Exploit ScenarioDerived	Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 0.2% exploitation probability (EPSS)

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AnalysisAI

Dell BIOS versions contain a Stack-based Buffer Overflow vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. 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-121. Dell BIOS versions contain a Stack-based Buffer Overflow vulnerability. A local authenticated malicious user could potentially exploit this vulnerability by sending excess data to a function in order to gain arbitrary code execution on the system. Affected products include: Dell Chengming 3900 Firmware, Dell Inspiron 14 Plus 7420 Firmware, Dell Inspiron 16 Plus 7620 Firmware, Dell Inspiron 3910 Firmware, Dell Inspiron 5320 Firmware.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.8 HIGH

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionNVD

Dell BIOS versions contain a Stack-based Buffer Overflow vulnerability. A local authenticated malicious user could potentially exploit this vulnerability by sending excess data to a function in order to gain arbitrary code execution on the system.

Threat Intelligence Overview

EPSS Score

0.2%

Top 90% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

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 HIGH

CISA KEV No

Public POC No

EPSS 0.2%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

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

Defer

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +39

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Stack-based Buffer Overflow HIGH

A stack-based buffer overflow occurs when a program writes more data to a buffer located on the stack than it was allocated to hold.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)NVD

cpe:2.3:o:dell:chengming_3900_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:dell:inspiron_14_plus_7420_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:dell:inspiron_16_plus_7620_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:dell:inspiron_3910_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:dell:inspiron_5320_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:dell:inspiron_5420_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:dell:inspiron_5620_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:dell:inspiron_7420_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:dell:inspiron_7620_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:dell:optiplex_3000_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:dell:optiplex_3000_thin_client_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:dell:optiplex_5000_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:dell:optiplex_5400_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:dell:optiplex_7000_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:dell:optiplex_7000_oem_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:dell:optiplex_7400_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:dell:precision_3460_small_form_factor_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:dell:precision_3660_tower_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:dell:precision_5770_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:dell:vostro_3710_firmware:*:*:*:*:*:*:*:*

+ 5 more

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