Is CVE-2016-20039 actively exploited?

No active exploitation of CVE-2016-20039 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2016-20039 be exploited remotely?

No. CVE-2016-20039 requires local access to exploit.

What is the CVSS score of CVE-2016-20039?

CVE-2016-20039 has a CVSS score of 8.4 (HIGH).

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HIGH

CVE-2016-20039

CWE-787Published: March 28, 2026· Updated: Mar 30, 2026

8.4

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:2.1th

Official Description

Multi Emulator Super System 0.154-3.1 contains a buffer overflow vulnerability in the gamma parameter handling that allows local attackers to crash the application or execute arbitrary code. Attackers can supply an oversized gamma parameter value to overflow the stack buffer and overwrite the instruction pointer with a controlled address to achieve code execution.

NVD Source

Technical Analysis

CVE-2016-20039 requires local access, meaning attackers must already have a foothold on the target system.

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), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.4.

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