Stack Buffer Overflow in NRSS RSS Reader by Codezen
CVE-2016-20043

8.6HIGH

Key Information:

Vendor

Nrss

Status
Nrss Reader
Vendor
CVE Published:
28 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2016-20043?

NRSS RSS Reader version 0.3.9-1 is susceptible to a stack buffer overflow vulnerability. This flaw allows local attackers to execute arbitrary code by providing an oversized argument to the -F parameter. By crafting malicious input that consists of 256 bytes of padding followed by a controlled EIP value, attackers can successfully overwrite the return address, enabling them to execute arbitrary code on the affected system.

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Affected Version(s)

NRSS Reader 0.3.9

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2016-20043 - Proof of Concept

References

https://www.exploit-db.com/exploits/39810
exploit
http://www.codezen.org/nrss/
product
https://www.vulncheck.com/advisories/nrss-rss-reader-1-st...
third-party-advisory

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Juan Sacco - http://www.exploitpack.com - jsacco@exploitpack.com
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