Is CVE-2021-25848 actively exploited?

No active exploitation of CVE-2021-25848 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-25848 be exploited remotely?

Yes. CVE-2021-25848 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-25848?

CVE-2021-25848 has a CVSS score of 9.1 (CRITICAL).

HOME VULNERABILITIESCVE-2021-25848

CRITICAL

CVE-2021-25848

CWE-125Published: May 10, 2021· Updated: Jun 17, 2026

9.1

CVSS v3.1

Official 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 using fixed loop counter variable without checking the actual available length via a crafted lldp packet.

NVD Source

Technical Analysis

CVE-2021-25848 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), availability disruption (denial of service), with a CVSS base score of 9.1.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityHigh

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

Affected Vendors & Products

moxa32 product(s)

vport 06ec-2v26m firmwarevport 06ec-2v26mvport 06ec-2v36m-t firmwarevport 06ec-2v36m-tvport 06ec-2v36m-ct firmwarevport 06ec-2v36m-ctvport 06ec-2v36m-ct-t firmwarevport 06ec-2v36m-ct-tvport 06ec-2v42m firmwarevport 06ec-2v42mvport 06ec-2v42m-t firmwarevport 06ec-2v42m-t+20

Source: NVD CPE · 32 total CPE entries