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Vulnerability record · CVE-2016-20042 · published 28 March 2026

CVE-2016-20042: Out-of-bounds write vulnerability

TRN 3.6-23 contains a stack buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an oversized argument to the application. Attackers can craft a malicious command-line argument with 156 bytes of padding followed by a return address to overwrite the instruction pointer and execute shellcode with user privileges.

8.6 CVSS 4.0 High EPSS 0.15% · top 96.9% CWE-787 · Out-of-bounds write Deferred
8.6CVSS 4.0 base score
0.15%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

TRN 3.6-23 contains a stack buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an oversized argument to the application. Attackers can craft a malicious command-line argument with 156 bytes of padding followed by a return address to overwrite the instruction pointer and execute shellcode with user privileges.

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://sourceforge.net/projects/trn/
https://www.exploit-db.com/exploits/39764
https://www.vulncheck.com/advisories/trn-23-stack-buffer-overflow-local-code-execution

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Source: NIST National Vulnerability Database (record CVE-2016-20042), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.