Is CVE-2020-7054 actively exploited?

No active exploitation of CVE-2020-7054 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-7054 be exploited remotely?

Yes. CVE-2020-7054 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-7054?

CVE-2020-7054 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2020-7054

CWE-787Published: January 14, 2020· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

MmsValue_decodeMmsData in mms/iso_mms/server/mms_access_result.c in libIEC61850 through 1.4.0 has a heap-based buffer overflow when parsing the MMS_BIT_STRING data type.

NVD Source

Technical Analysis

CVE-2020-7054 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

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 8.8.

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