What is the CVSS score of CVE-2021-25849?

CVE-2021-25849 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 1.0%.

Vport 06Ec 2V26M Firmware CVE-2021-25849

HIGH

Integer Underflow (CWE-191)

2021-05-10 cve@mitre.org

Denial Of Service Integer Overflow Vport 06Ec 2V26M Firmware Vport 06Ec 2V36M T Firmware Vport 06Ec 2V36M Ct Firmware Vport 06Ec 2V36M Ct T Firmware Vport 06Ec 2V42M Firmware Vport 06Ec 2V42M T Firmware Vport 06Ec 2V42M Ct Firmware Vport 06Ec 2V42M Ct T Firmware Vport 06Ec 2V60M Firmware Vport 06Ec 2V60M T Firmware Vport 06Ec 2V60M Ct Firmware Vport 06Ec 2V60M Ct T Firmware Vport 06Ec 2V80M Firmware Vport 06Ec 2V80M T Firmware Vport 06Ec 2V80M Ct Firmware Vport 06Ec 2V80M Ct T Firmware Moxa

7.5

CVSS 3.1 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-191 ASVS 5.0 V15 - Secure Coding and Architecture Integer underflow checks
Impact	CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.
Exploit ScenarioDerived	This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

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

No patch listed yet 1.0% exploitation probability (EPSS)

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

Alert me

AnalysisAI

An integer underflow was discovered in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, improper validation of the PortID TLV leads to Denial of Service via a crafted lldp. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, 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

This vulnerability is classified under CWE-191. An integer underflow was discovered in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, improper validation of the PortID TLV leads to Denial of Service via a crafted lldp packet. Affected products include: Moxa Vport 06Ec-2V26M Firmware, Moxa Vport 06Ec-2V36M-T Firmware, Moxa Vport 06Ec-2V36M-Ct Firmware, Moxa Vport 06Ec-2V36M-Ct-T Firmware, Moxa Vport 06Ec-2V42M Firmware. Version information: version 1.1.

Know when Vport 06Ec 2V26M Firmware 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 7.5 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

DescriptionNVD

Threat Intelligence Overview

EPSS Score

1.0%

Top 40% 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 1.0%

Patch available No

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

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +38

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Integer Overflow MEDIUM

Integer overflow occurs when an arithmetic operation produces a result that exceeds the maximum value a given integer type can store.

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:o:moxa:vport_06ec-2v26m_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:moxa:vport_06ec-2v36m-t_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:moxa:vport_06ec-2v36m-ct_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:moxa:vport_06ec-2v36m-ct-t_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:moxa:vport_06ec-2v42m_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:moxa:vport_06ec-2v42m-t_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:moxa:vport_06ec-2v42m-ct_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:moxa:vport_06ec-2v42m-ct-t_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:moxa:vport_06ec-2v60m_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:moxa:vport_06ec-2v60m-t_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:moxa:vport_06ec-2v60m-ct_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:moxa:vport_06ec-2v60m-ct-t_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:moxa:vport_06ec-2v80m_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:moxa:vport_06ec-2v80m-t_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:moxa:vport_06ec-2v80m-ct_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:moxa:vport_06ec-2v80m-ct-t_firmware:*:*:*:*:*:*:*:*

More in Vport 06Ec 2V26M Firmware

View all

CVE-2021-25848 CRITICAL Act Now

9.1 May 10

Improper validation of the length field of LLDP-MED TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, ver

CVE-2021-25847 CRITICAL Act Now

9.1 May 10

Improper validation of the length field of LLDP-MED TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, ver

CVE-2021-25846 HIGH This Week

7.5 May 10

Improper validation of the ChassisID TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, allow

CVE-2021-25845 HIGH This Week

7.5 May 10

Improper validation of the ChassisID TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, allow

Same weakness CWE-191 – Integer Underflow

View all

CVE-2014-0497 CRITICAL POC

9.8

CVE-2015-5212 MEDIUM

6.8

CVE-2017-14496 HIGH POC

7.5

CVE-2014-8768 MEDIUM POC

5.0

CVE-2017-11757 CRITICAL POC

9.8

CVE-2024-23313 CRITICAL POC

9.8

CVE-2021-3323 CRITICAL POC

9.8

CVE-2021-21811 CRITICAL POC

9.8

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.moxa.com/en/ ADVISORY https://www.moxa.com/en/support/product-support/security-advisory/vport-06ec-2v-series-ip-cameras-vulnerabilities

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

Back