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.
References10
- raw.githubusercontent.com/rapid7/metasploit-framework/master/mo…
- web.archive.org/web/20090116203306/www.talkative-irc.com/
- www.exploit-db.com/exploits/16459
- www.exploit-db.com/exploits/8227
- www.vulncheck.com/advisories/talkative-irc-response-buffer-over…
- www.zeroscience.mk/en/vulnerabilities/ZSL-2009-4909.php
- raw.githubusercontent.com/rapid7/metasploit-framework/master/mo…
- www.exploit-db.com/exploits/16459
- www.exploit-db.com/exploits/8227
- www.zeroscience.mk/en/vulnerabilities/ZSL-2009-4909.php
Metrics
- CVSS 4.0
-
9.3
CRITICAL
Score source: CNA
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 2% percentile: 84 · as of 8 November 2026
- CWE
- CWE-121
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.