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Vulnerability record · CVE-2002-1840 · published 31 December 2002

CVE-2002-1840: Irssi vulnerability

Irssi · Irssi

irssi IRC client 0.8.4, when downloaded after 14-March-2002, could contain a backdoor in the configuration file, which allows remote attackers to access the system.

10.0 CVSS 2.0 High EPSS 2.8% · top 14.3%
10.0CVSS 2.0 base score
2.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
16 Jun 2026Last modified by NVD

Description

irssi IRC client 0.8.4, when downloaded after 14-March-2002, could contain a backdoor in the configuration file, which allows remote attackers to access the system.

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

Affected products

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

References

LinkTags
http://online.securityfocus.com/archive/1/274132
http://real.irssi.org/?page=backdoor Vendor Advisory
http://www.iss.net/security_center/static/9176.php
http://www.securityfocus.com/bid/4831 Patch
http://online.securityfocus.com/archive/1/274132
http://real.irssi.org/?page=backdoor Vendor Advisory
http://www.iss.net/security_center/static/9176.php
http://www.securityfocus.com/bid/4831 Patch

Track CVE-2002-1840 inside VULONE

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Related vulnerabilities

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

9.8CVE-2019-15717Irssi use after free vulnerabilityIrssi 1.2.x before 1.2.2 has a use-after-free if the IRC server sends a double CAP.EPSS 2.5%9.8CVE-2019-5882Irssi use after free vulnerabilityIrssi 1.1.x before 1.1.2 has a use after free when hidden lines are expired from the scroll buffer.EPSS 2.5%9.8CVE-2018-7053Irssi use after free vulnerabilityAn issue was discovered in Irssi before 1.0.7 and 1.1.x before 1.1.1. There is a use-after-free when SASL messages are received in an unexpected orde…EPSS 2.4%9.8CVE-2018-7054Irssi use after free vulnerabilityAn issue was discovered in Irssi before 1.0.7 and 1.1.x before 1.1.1. There is a use-after-free when a server is disconnected during netsplits. NOTE:…EPSS 2.4%9.8CVE-2018-5206Irssi null pointer dereference vulnerabilityWhen the channel topic is set without specifying a sender, Irssi before 1.0.6 may dereference a NULL pointer.EPSS 2.2%9.8CVE-2018-5208Irssi memory buffer overflow vulnerabilityIn Irssi before 1.0.6, a calculation error in the completion code could cause a heap buffer overflow when completing certain strings.EPSS 2.4%9.8CVE-2017-10965Irssi null pointer dereference vulnerabilityAn issue was discovered in Irssi before 1.0.4. When receiving messages with invalid time stamps, Irssi would try to dereference a NULL pointer.EPSS 3.4%9.8CVE-2017-10966Irssi use after free vulnerabilityAn issue was discovered in Irssi before 1.0.4. While updating the internal nick list, Irssi could incorrectly use the GHashTable interface and free t…EPSS 2.9%

Source: NIST National Vulnerability Database (record CVE-2002-1840), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.