Stack-based Buffer Overflow in Talkative IRC Client by Talkative
CVE-2009-20007

9.3CRITICAL

Key Information:

Vendor

Talkative

Status
Talkative Irc
Vendor
CVE Published:
16 September 2025

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 68%

What is CVE-2009-20007?

The Talkative IRC v0.4.4.16 client is susceptible to a stack-based buffer overflow due to improper handling of specially crafted response strings from connected clients. An attacker can exploit this vulnerability by sending an excessively long message that overflows a designated buffer space, potentially enabling arbitrary code execution within the context of the affected process. This issue is remotely exploitable and does not require any form of authentication, posing a significant threat to users of the software.

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Affected Version(s)

Talkative IRC * <= 0.4.4.16

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-2009-20007 - Proof of Concept

CVE-2009-20007 - Proof of Concept

CVE-2009-20007 - Proof of Concept

References

https://raw.githubusercontent.com/rapid7/metasploit-frame...
exploit
https://www.exploit-db.com/exploits/8227
exploit
https://www.exploit-db.com/exploits/16459
exploit

EPSS Score

68% chance of being exploited in the next 30 days.

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
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

Gjoko Krstic "LiquidWorm" of Zero Science Lab
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