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Vulnerability record · CVE-2010-0303 · published 4 February 2010

CVE-2010-0303: Dinko korunic hybserv2 improper input validation vulnerability

DDinko Korunic · Hybserv2

mystring.c in hybserv in IRCD-Hybrid (aka Hybrid2 IRC Services) 1.9.2 through 1.9.4 allows remote attackers to cause a denial of service (daemon crash) via a ":help \t" private message to the MemoServ service.

5.0 CVSS 2.0 Medium EPSS 8.1% · top 5.4% CWE-20 · Improper input validation
5.0CVSS 2.0 base score
8.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
16References
16 Jun 2026Last modified by NVD

Description

mystring.c in hybserv in IRCD-Hybrid (aka Hybrid2 IRC Services) 1.9.2 through 1.9.4 allows remote attackers to cause a denial of service (daemon crash) via a ":help \t" private message to the MemoServ service.

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=550389
http://marc.info/?l=oss-security&m=126476591925300&w=2
http://secunia.com/advisories/38350 Vendor Advisory
http://secunia.com/advisories/38352 Vendor Advisory
http://security.debian.org/pool/updates/main/h/hybserv/hybserv_1.9.2-4+lenny2.diff.gz Patch
http://www.debian.org/security/2010/dsa-1982
http://www.securityfocus.com/bid/38006
https://exchange.xforce.ibmcloud.com/vulnerabilities/55992
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=550389
http://marc.info/?l=oss-security&m=126476591925300&w=2
http://secunia.com/advisories/38350 Vendor Advisory
http://secunia.com/advisories/38352 Vendor Advisory
http://security.debian.org/pool/updates/main/h/hybserv/hybserv_1.9.2-4+lenny2.diff.gz Patch
http://www.debian.org/security/2010/dsa-1982
http://www.securityfocus.com/bid/38006
https://exchange.xforce.ibmcloud.com/vulnerabilities/55992

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

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Source: NIST National Vulnerability Database (record CVE-2010-0303), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.