What is the CVSS score of CVE-2023-27471?

CVE-2023-27471 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.2%.

Insydeh2o CVE-2023-27471

MEDIUM

2023-08-18 cve@mitre.org

Denial Of Service Insydeh2o Insyde

5.5

CVSS 3.1 · NVD

View

Vulnerability Assessment

Impact	CVSS score of 5.5 (MEDIUM). Attack characteristics: local attack vector, low complexity, low privileges required, no user interaction not required.
Exploit ScenarioDerived	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 0.2% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAI

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. 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

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. UEFI implementations do not correctly protect and validate information contained in the 'MeSetup' UEFI variable. On some systems, this variable can be overwritten using operating system APIs. Exploitation of this vulnerability could potentially lead to denial of service for the platform. Affected products include: Insyde Insydeh2O. Version information: through 5.5..

Know when Insydeh2o gets its next vulnerability

Watch products and get an email when something new is published
Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 5.5 MEDIUM

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

None

Integrity

None

Availability

High

DescriptionNVD

Threat Intelligence Overview

EPSS Score

0.2%

Top 93% 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 MEDIUM

CISA KEV No

Public POC No

EPSS 0.2%

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

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: +28

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)NVD

cpe:2.3:a:insyde:insydeh2o:5.0:*:*:*:*:*:*:*

cpe:2.3:a:insyde:insydeh2o:5.1:*:*:*:*:*:*:*

cpe:2.3:a:insyde:insydeh2o:5.2:*:*:*:*:*:*:*

cpe:2.3:a:insyde:insydeh2o:5.3:*:*:*:*:*:*:*

cpe:2.3:a:insyde:insydeh2o:5.4:*:*:*:*:*:*:*

cpe:2.3:a:insyde:insydeh2o:5.5:*:*:*:*:*:*:*

More in Insydeh2o

View all

CVE-2023-22614 HIGH This Week POC

8.8 Apr 11

An issue was discovered in ChipsetSvcSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. Rated high severity (CVSS 8.8)

CVE-2022-36448 HIGH This Week POC

8.2 Sep 28

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. Rated high severity (CVSS 8.2), this vulnerabil

CVE-2022-36338 HIGH This Week POC

8.2 Sep 23

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. Rated high severity (CVSS 8.2), this vulnerabil

CVE-2022-35408 HIGH This Week POC

8.2 Sep 22

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. Rated high severity (CVSS 8.2), this vulnerabil

CVE-2022-35895 HIGH This Week POC

8.2 Sep 21

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. Rated high severity (CVSS 8.2), this vulnerabil

CVE-2023-22616 HIGH This Week POC

7.8 Apr 12

An issue was discovered in Insyde InsydeH2O with kernel 5.2 through 5.5. Rated high severity (CVSS 7.8), this vulnerabil

CVE-2026-6484 HIGH Act Now

8.2 Aug 12

Arbitrary code execution at the firmware level is possible in Insyde Software's InsydeH2O UEFI implementation due to the

CVE-2022-35894 MEDIUM This Month POC

6.0 Sep 22

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. Rated medium severity (CVSS 6.0), this vulnerab

CVE-2022-35896 MEDIUM This Month POC

6.0 Sep 22

An issue SMM memory leak vulnerability in SMM driver (SMRAM was discovered in Insyde InsydeH2O with kernel 5.0 through 5

CVE-2023-39281 CRITICAL Act Now

9.8 Nov 01

A stack buffer overflow vulnerability discovered in AsfSecureBootDxe in Insyde InsydeH2O with kernel 5.0 through 5.5 all

CVE-2023-40238 MEDIUM This Month POC

5.5 Dec 07

A LogoFAIL issue was discovered in BmpDecoderDxe in Insyde InsydeH2O with kernel 5.2 before 05.28.47, 5.3 before 05.37.4

CVE-2023-22613 HIGH This Week

8.8 Apr 11

An issue was discovered in IhisiSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. Rated high severity (CVSS 8.8), thi

Same technique Denial Of Service

View all

CVE-2015-5119 CRITICAL POC

9.8

CVE-2011-2462 CRITICAL POC

9.8

CVE-2011-0611 HIGH POC

8.8

CVE-2012-1889 HIGH POC

8.8

CVE-2012-0507 CRITICAL POC

9.8

CVE-2014-1761 HIGH POC

7.8

CVE-2015-5122 CRITICAL POC

9.8

CVE-2011-0609 HIGH POC

7.8

References

Advisories & patches

ADVISORY https://www.insyde.com/security-pledge/SA-2023036

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

Back