CVE-2016-20042

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.

Score

CVSS 4.0 8.6 High

Status

Deferred - disclosure@vulncheck.com

Published

2026-03-28

Last modified

2026-03-30

Weaknesses

CWE-787

Affected products

• Threaded Usenet News Reader (Trn)

References

• 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