CVE-2009-20007 Talkative IRC v0.4.4.16 Response Buffer Overflow
Remote attackers can execute arbitrary code on Talkative IRC clients by sending specially crafted long response strings that trigger a stack-based buffer overflow.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2009-20007?
CVE-2009-20007 is a critical memory corruption vulnerability in Talkative IRC, published on 16 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-121
Which versions are affected by CVE-2009-20007?
How do I fix CVE-2009-20007?
No fix has been published for CVE-2009-20007 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2009-20007 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-20007 exists.
Public exploit code: 1 Metasploit module.
Sources
Also known as GHSA-hv84-7vcq-ccgm.