CVE-2016-20042 HIGH

CVE-2016-20042: TRN 3.6-23 Stack Buffer Overflow Local Code Execution

Vendor Trn
Product Threaded USENET News Reader
Weakness CWE-787
Published March 28, 2026
Last update March 30, 2026

CVSS base score

8.6/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 28, 2026 CVE published
March 30, 2026 Record updated