CVE-2016-20048

HIGH

iSelect 1.4.0-2+b1 Local Buffer Overflow via key parameter

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2016-20048. PoCs published by Juan Sacco.

AI-analyzed exploit summary This exploit demonstrates a local buffer overflow in iSelect 1.4.0-2+b1 via the -k command-line argument, leveraging a NOP sled and shellcode to achieve arbitrary code execution. The exploit bypasses stack protections (without Fortify) and targets the strcpy_chk function.

Description

iSelect 1.4.0-2+b1 contains a local buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an oversized value to the -k/--key parameter. Attackers can craft a malicious argument containing a NOP sled, shellcode, and return address to overflow a 1024-byte stack buffer and gain code execution with user privileges.

Exploits (1)

exploitdb WORKING POC
by Juan Sacco · pythonlocallinux
https://www.exploit-db.com/exploits/41076

This exploit demonstrates a local buffer overflow in iSelect 1.4.0-2+b1 via the -k command-line argument, leveraging a NOP sled and shellcode to achieve arbitrary code execution. The exploit bypasses stack protections (without Fortify) and targets the strcpy_chk function.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: iSelect 1.4.0-2+b1
No auth needed
Prerequisites: iSelect binary installed locally · non-Fortify protected environment
devstral-2 · analyzed Apr 08, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit exploit
ExploitDB-41076
https://www.exploit-db.com/exploits/41076
Product product
Official Product Homepage
http://www.ossp.org/pkg/tool/iselect/
Third Party Advisory third-party-advisory
VulnCheck Advisory: iSelect 1.4.0-2+b1 Local Buffer Overflow via key parameter
https://www.vulncheck.com/advisories/iselect-2-b1-local-buffer-overflow-via-key-parameter

Scores

CVSS v3 8.4
EPSS 0.0017
EPSS Percentile 6.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-22
Status published
Products (1)
iselect/iSelect 1.4.0-2+b1
Published Mar 28, 2026
Tracked Since Mar 29, 2026