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Vulnerability record · CVE-2009-0661 · published 19 March 2009

CVE-2009-0661: Flashtux weechat improper input validation vulnerability

Flashtux · Weechat

Wee Enhanced Environment for Chat (WeeChat) 0.2.6 allows remote attackers to cause a denial of service (crash) via an IRC PRIVMSG command containing crafted color codes that trigger an out-of-bounds read.

5.0 CVSS 2.0 Medium EPSS 3.1% · top 12.7% CWE-20 · Improper input validation
5.0CVSS 2.0 base score
3.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
22References
16 Jun 2026Last modified by NVD

Description

Wee Enhanced Environment for Chat (WeeChat) 0.2.6 allows remote attackers to cause a denial of service (crash) via an IRC PRIVMSG command containing crafted color codes that trigger an out-of-bounds read.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=519940
http://osvdb.org/52763
http://savannah.nongnu.org/bugs/index.php?25862
http://secunia.com/advisories/34304 Vendor Advisory
http://secunia.com/advisories/34328 Vendor Advisory
http://weechat.flashtux.org/ Vendor Advisory
http://www.debian.org/security/2009/dsa-1744
http://www.openwall.com/lists/oss-security/2009/03/17/8
http://www.securityfocus.com/bid/34148 Patch
http://www.vupen.com/english/advisories/2009/0758 PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/49295
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=519940
http://osvdb.org/52763
http://savannah.nongnu.org/bugs/index.php?25862
http://secunia.com/advisories/34304 Vendor Advisory
http://secunia.com/advisories/34328 Vendor Advisory
http://weechat.flashtux.org/ Vendor Advisory
http://www.debian.org/security/2009/dsa-1744
http://www.openwall.com/lists/oss-security/2009/03/17/8
http://www.securityfocus.com/bid/34148 Patch
http://www.vupen.com/english/advisories/2009/0758 PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/49295

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2009-0661), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.