CVE-2004-0409

CVE-2004-0409 is a high-severity vulnerability in Xchat with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Stack-based buffer overflow in the Socks-5 proxy code for XChat 1.8.0 to 2.0.8, with socks5 traversal enabled, allows remote attackers to execute arbitrary code.

Frequently asked questions

What is CVE-2004-0409?
Stack-based buffer overflow in the Socks-5 proxy code for XChat 1.8.0 to 2.0.8, with socks5 traversal enabled, allows remote attackers to execute arbitrary code.
How severe is CVE-2004-0409?
CVE-2004-0409 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2004-0409 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-0409?
CVE-2004-0409 primarily affects Xchat. In total, 29 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-0409?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2004-0409 published?
CVE-2004-0409 was published on 2004-06-01 and last updated on 2026-06-16.

References

Affected products (29)

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