Is CVE-2021-35520 actively exploited?

No active exploitation of CVE-2021-35520 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-35520 be exploited remotely?

No. CVE-2021-35520 requires physical access to exploit.

What is the CVSS score of CVE-2021-35520?

CVE-2021-35520 has a CVSS score of 6.2 (MEDIUM).

HOME VULNERABILITIESCVE-2021-35520

MEDIUM

CVE-2021-35520

CWE-787Published: July 22, 2021· Updated: Jun 17, 2026

6.2

CVSS v3.1

Official Description

A Buffer Overflow in Thrift command handlers in IDEMIA Morpho Wave Compact and VisionPass devices before 2.6.2 allows physically proximate authenticated attackers to achieve code execution, denial of services, and information disclosure via serial ports.

NVD Source

Technical Analysis

CVE-2021-35520 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.2.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorPhysical

Attack ComplexityLow

Privileges Req.High

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected Vendors & Products

idemia8 product(s)

morphowave compact mdpi firmwaremorphowave compact mdpimorphowave compact mdpi-m firmwaremorphowave compact mdpi-mvisionpass mdpi firmwarevisionpass mdpivisionpass mdpi-m firmwarevisionpass mdpi-m

Source: NVD CPE · 8 total CPE entries