CVE-2021-25847

Name: CVE-2021-25847
Creator: NVD / NIST
Published: 2021-05-10T11:15:07.903+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 1.19%

Last modified Jun 17, 2026

CVE-2021-25847 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. Improper validation of the length field of LLDP-MED TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, allows information disclosure to attackers due to controllable loop counter variable via a crafted lldp packet.. EPSS estimates a 1.19% chance of exploitation in the next 30 days.

Description

Improper validation of the length field of LLDP-MED TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, allows information disclosure to attackers due to controllable loop counter variable via a crafted lldp packet.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS Probability

1.19%

63.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Moxa	Vport 06ec-2v26m Firmware	<= 1.1
Moxa	Vport 06ec-2v36m-T Firmware	<= 1.1
Moxa	Vport 06ec-2v36m-Ct Firmware	<= 1.1
Moxa	Vport 06ec-2v36m-Ct-T Firmware	<= 1.1
Moxa	Vport 06ec-2v42m Firmware	<= 1.1
Moxa	Vport 06ec-2v42m-T Firmware	<= 1.1
Moxa	Vport 06ec-2v42m-Ct Firmware	<= 1.1
Moxa	Vport 06ec-2v42m-Ct-T Firmware	<= 1.1
Moxa	Vport 06ec-2v60m Firmware	<= 1.1
Moxa	Vport 06ec-2v60m-T Firmware	<= 1.1
Moxa	Vport 06ec-2v60m-Ct Firmware	<= 1.1
Moxa	Vport 06ec-2v60m-Ct-T Firmware	<= 1.1
Moxa	Vport 06ec-2v80m Firmware	<= 1.1
Moxa	Vport 06ec-2v80m-T Firmware	<= 1.1
Moxa	Vport 06ec-2v80m-Ct Firmware	<= 1.1
Moxa	Vport 06ec-2v80m-Ct-T Firmware	<= 1.1

References

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

Timeline

Published: May 10, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-25847?

How severe is CVE-2021-25847?

CVE-2021-25847 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 1.19% probability of exploitation in the next 30 days.

How do I fix CVE-2021-25847?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-25847?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST