CVE-2016-20043

HIGH

NRSS RSS Reader 0.3.9-1 Stack Buffer Overflow

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2016-20043. PoCs published by Juan Sacco.

AI-analyzed exploit summary This exploit demonstrates a stack-based buffer overflow in NRSS RSS Reader v0.3.9-1, leading to arbitrary code execution via a crafted command-line argument. The PoC includes a NOP sled, shellcode, and overwrites the EIP to execute a reverse shell.

Description

NRSS RSS Reader 0.3.9-1 contains a stack buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an oversized argument to the -F parameter. Attackers can craft a malicious input with 256 bytes of padding followed by a controlled EIP value to overwrite the return address and achieve code execution.

Exploits (1)

exploitdb WORKING POC
by Juan Sacco · pythonlocallinux
https://www.exploit-db.com/exploits/39810

This exploit demonstrates a stack-based buffer overflow in NRSS RSS Reader v0.3.9-1, leading to arbitrary code execution via a crafted command-line argument. The PoC includes a NOP sled, shellcode, and overwrites the EIP to execute a reverse shell.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: NRSS RSS Reader v0.3.9-1
No auth needed
Prerequisites: NRSS RSS Reader v0.3.9-1 installed on the target system · Local access to execute the exploit
devstral-2 · analyzed Apr 08, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit exploit
ExploitDB-39810
https://www.exploit-db.com/exploits/39810
Product product
Official Product Homepage
http://www.codezen.org/nrss/
Third Party Advisory third-party-advisory
VulnCheck Advisory: NRSS RSS Reader 0.3.9-1 Stack Buffer Overflow
https://www.vulncheck.com/advisories/nrss-rss-reader-1-stack-buffer-overflow

Scores

CVSS v3 8.4
EPSS 0.0020
EPSS Percentile 10.3%
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-787
Status published
Products (2)
nrss/nrss < 0.3.9-1
nrss/NRSS Reader 0.3.9
Published Mar 28, 2026
Tracked Since Mar 29, 2026