CVE-2009-0661

CVE-2009-0661 is a medium-severity vulnerability in Flashtux Weechat with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

• Severity: Medium (CVSS 2.0 base score 5.0)
• EPSS exploit prediction: 3% (86th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-20
• Affected product: Flashtux Weechat
• Published: 2009-03-19
• Last modified: 2026-06-16

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.

Frequently asked questions

What is CVE-2009-0661?

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.

How severe is CVE-2009-0661?

CVE-2009-0661 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2009-0661 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0661?

CVE-2009-0661 affects Flashtux Weechat. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-0661?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-0661 published?

CVE-2009-0661 was published on 2009-03-19 and last updated on 2026-06-16.

References

• 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
• http://secunia.com/advisories/34328
• http://weechat.flashtux.org/
• 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
• http://www.vupen.com/english/advisories/2009/0758
• https://exchange.xforce.ibmcloud.com/vulnerabilities/49295

Affected products (1)

• cpe:2.3:a:flashtux:weechat:0.2.6:*:*:*:*:*:*:*

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