mamedev Mess Emulator 0.154-3.1 Parameter gamma out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k1.76

Summaryinfo

A vulnerability classified as critical was found in mamedev Mess Emulator 0.154-3.1. This impacts an unknown function of the component Parameter Handler. Executing a manipulation of the argument gamma can lead to out-of-bounds write. This vulnerability appears as CVE-2016-20039. The attack requires local access. In addition, an exploit is available.

Detailsinfo

A vulnerability classified as critical was found in mamedev Mess Emulator 0.154-3.1. This vulnerability affects an unknown function of the component Parameter Handler. The manipulation of the argument gamma with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at exploit-db.com. This vulnerability was named CVE-2016-20039 since 03/28/2026. The exploitation appears to be easy. The attack needs to be approached locally. Technical details and also a public exploit are known.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Exploit-DB (39673) and EUVD (EUVD-2016-10833). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.4
CNA Vector (VulnCheck): 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Exploit-DB: 🔒

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/28/2026 Advisory disclosed
03/28/2026 +0 days CVE reserved
03/28/2026 +0 days VulDB entry created
03/29/2026 +1 days VulDB entry last update

Sourcesinfo

Advisory: 39673
Status: Not defined

CVE: CVE-2016-20039 (🔒)
GCVE (CVE): GCVE-0-2016-20039
GCVE (VulDB): GCVE-100-354088
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/28/2026 21:49
Updated: 03/29/2026 04:52
Changes: 03/28/2026 21:49 (80), 03/29/2026 04:52 (1)
Complete: 🔍
Cache ID: 216:F24:103

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