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Vulnerability record · CVE-2007-3837 · published 17 July 2007

CVE-2007-3837: Hydrairc vulnerability

Hydrairc · Hydrairc

Heap-based buffer overflow in HydraIRC 0.3.151 allows remote IRC servers to cause a denial of service (application crash) via a long CTCP request message containing '%' (percent) characters.

7.8 CVSS 2.0 High EPSS 1.4% · top 28.2%
7.8CVSS 2.0 base score
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
16 Jun 2026Last modified by NVD

Description

Heap-based buffer overflow in HydraIRC 0.3.151 allows remote IRC servers to cause a denial of service (application crash) via a long CTCP request message containing '%' (percent) characters.

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

Affected products

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

References

LinkTags
http://osvdb.org/38625
http://www.portcullis-security.com/uplds/advisories/HydraIRC_bof-07_007.txt Patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/35408
http://osvdb.org/38625
http://www.portcullis-security.com/uplds/advisories/HydraIRC_bof-07_007.txt Patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/35408

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Related vulnerabilities

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

7.8CVE-2007-3836Hydrairc vulnerabilityFormat string vulnerability in HydraIRC 0.3.151 allows remote attackers to cause a denial of service via format string specifiers in certain data rel…EPSS 1.6%5.0CVE-2008-3578Hydrairc improper input validation vulnerabilityHydraIRC 0.3.164 and earlier allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a long irc:// …EPSS 7.1%

Source: NIST National Vulnerability Database (record CVE-2007-3837), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.