CVE-2009-20007

critical

Description

Talkative IRC v0.4.4.16 is vulnerable to a stack-based buffer overflow when processing specially crafted response strings sent to a connected client. An attacker can exploit this flaw by sending an overly long message that overflows a fixed-length buffer, potentially leading to arbitrary code execution in the context of the vulnerable process. This vulnerability is exploitable remotely and does not require authentication.

References

https://www.zeroscience.mk/en/vulnerabilities/ZSL-2009-4909.php

https://www.vulncheck.com/advisories/talkative-irc-response-buffer-overflow

https://www.exploit-db.com/exploits/8227

https://www.exploit-db.com/exploits/16459

https://web.archive.org/web/20090116203306/http://www.talkative-irc.com/

https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/misc/talkative_response.rb

Details

Source: Mitre, NVD

Published: 2025-09-16

Updated: 2025-09-17

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

CVSS v4

Base Score: 9.3

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Severity: Critical

EPSS

EPSS: 0.0016