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Vulnerability record · CVE-2009-1789 · published 26 May 2009

CVE-2009-1789: Eggheads eggdrop vulnerability

Eggheads · Eggdrop

mod/server.mod/servmsg.c in Eggheads Eggdrop and Windrop 1.6.19 and earlier allows remote attackers to cause a denial of service (crash) via a crafted PRIVMSG that causes an empty string to trigger a negative string length copy. NOTE: this issue exists because of an incorrect fix for CVE-2007-2807.

4.3 CVSS 2.0 Medium EPSS 8.5% · top 5.2%
4.3CVSS 2.0 base score
8.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
32References
16 Jun 2026Last modified by NVD

Description

mod/server.mod/servmsg.c in Eggheads Eggdrop and Windrop 1.6.19 and earlier allows remote attackers to cause a denial of service (crash) via a crafted PRIVMSG that causes an empty string to trigger a negative string length copy. NOTE: this issue exists because of an incorrect fix for CVE-2007-2807.

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

Affected products

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

References

LinkTags
http://archives.neohapsis.com/archives/fulldisclosure/2009-05/0129.html
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=528778
http://cvs.eggheads.org/viewvc/viewvc.cgi/eggdrop1.6/doc/Changes1.6?revision=1.20&view=markup PatchVendor Advisory
http://osvdb.org/54460
http://secunia.com/advisories/35104 Vendor Advisory
http://secunia.com/advisories/35158
http://secunia.com/advisories/35690
http://www.debian.org/security/2009/dsa-1826
http://www.mandriva.com/security/advisories?name=MDVSA-2009:126
http://www.securityfocus.com/archive/1/503574
http://www.securityfocus.com/bid/34985
http://www.vupen.com/english/advisories/2009/1340 PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/50547
https://www.exploit-db.com/exploits/8695
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01333.html
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01337.html
http://archives.neohapsis.com/archives/fulldisclosure/2009-05/0129.html
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=528778
http://cvs.eggheads.org/viewvc/viewvc.cgi/eggdrop1.6/doc/Changes1.6?revision=1.20&view=markup PatchVendor Advisory
http://osvdb.org/54460
http://secunia.com/advisories/35104 Vendor Advisory
http://secunia.com/advisories/35158
http://secunia.com/advisories/35690
http://www.debian.org/security/2009/dsa-1826
http://www.mandriva.com/security/advisories?name=MDVSA-2009:126
http://www.securityfocus.com/archive/1/503574
http://www.securityfocus.com/bid/34985
http://www.vupen.com/english/advisories/2009/1340 PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/50547
https://www.exploit-db.com/exploits/8695
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01333.html
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01337.html

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Related vulnerabilities

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

7.5CVE-2004-0274Eggheads eggdrop irc bot vulnerabilityShare.mod in Eggheads Eggdrop IRC bot 1.6.10 through 1.6.15 can mistakenly assign STAT_OFFERED status to a bot that is not a sharebot, which allows r…EPSS 2.0%6.8CVE-2007-2807Eggheads eggdrop irc bot vulnerabilityStack-based buffer overflow in mod/server.mod/servrmsg.c in Eggdrop 1.6.18, and possibly earlier, allows user-assisted, remote IRC servers to execute…EPSS 10.0%

Source: NIST National Vulnerability Database (record CVE-2009-1789), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.