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CVE-2009-1789

27
FAUCET Score

CVE-2009-1789 is a denial-of-service vulnerability affecting Eggheads Eggdrop and Windrop versions 1.6.19 and earlier. A remote attacker can crash the IRC bot by sending a specially crafted PRIVMSG, which leads to an empty string triggering a negative string length copy. This issue arose from an incorrect fix for a previous vulnerability, CVE-2007-2807. The vulnerability has a CVSS score of 4.3, indicating a medium severity. It can be exploited remotely with medium attack complexity and does not require authentication, resulting in a partial availability impact (denial of service). While there is no evidence of active exploitation or Metasploit modules, an exploit (EDB-8695) is publicly available on ExploitDB. Despite this, the CVE has minimal community discussion and media coverage, suggesting it is not widely recognized or actively targeted.

Impacted Technologies

VendorProductVersion(s)CPE
1.6.0CPE matchmatch criteria
cpe:2.3:a:eggheads:eggdrop:1.6.0:*:*:*:*:*:*:*
1.6.1CPE matchmatch criteria
cpe:2.3:a:eggheads:eggdrop:1.6.1:*:*:*:*:*:*:*
1.6.2CPE matchmatch criteria
cpe:2.3:a:eggheads:eggdrop:1.6.2:*:*:*:*:*:*:*
1.6.3CPE matchmatch criteria
cpe:2.3:a:eggheads:eggdrop:1.6.3:*:*:*:*:*:*:*
1.6.4CPE matchmatch criteria
cpe:2.3:a:eggheads:eggdrop:1.6.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
8.49%
Probability of exploitation in next 30 days
EPSS Percentile
94.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-8695 · May 15, 2009
This CVE's current EPSS score of 0.0849 is in the 94th percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2009-1789Important

eggdrop DoS (crash)

May 26, 2009

References

archives.neohapsis.com / archives/fulldisclosure/2009-05/0129.html
bugs.debian.org / cgi-bin/bugreport.cgi
cvs.eggheads.org / viewvc/viewvc.cgi/eggdrop1.6/doc/Changes1.6
PatchVendor Advisory
osvdb.org / 54460
secunia.com / advisories/35104
Vendor Advisory
secunia.com / advisories/35158
secunia.com / advisories/35690
exchange.xforce.ibmcloud.com / vulnerabilities/50547
exploit-db.com / exploits/8695
redhat.com / archives/fedora-package-announce/2009-May/msg01333.html
redhat.com / archives/fedora-package-announce/2009-May/msg01337.html
debian.org / security/2009/dsa-1826
mandriva.com / security/advisories
securityfocus.com / archive/1/503574
securityfocus.com / bid/34985
vupen.com / english/advisories/2009/1340
PatchVendor Advisory