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Vulnerability record · CVE-2002-2253 · published 31 December 2002

CVE-2002-2253: Cyrus libsieve memory buffer overflow vulnerability

Cyrus · Libsieve

Multiple buffer overflows in Cyrus Sieve / libSieve 2.1.2 and earlier allow remote attackers to execute arbitrary code via (1) a long header name, (2) a long IMAP flag, or (3) a script that generates a large number of errors that overflow the resulting error string.

10.0 CVSS 2.0 High EPSS 6.6% · top 6.4% CWE-119 · Memory buffer overflow
10.0CVSS 2.0 base score
6.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
14References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

Multiple buffer overflows in Cyrus Sieve / libSieve 2.1.2 and earlier allow remote attackers to execute arbitrary code via (1) a long header name, (2) a long IMAP flag, or (3) a script that generates a large number of errors that overflow the resulting error string.

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://archives.neohapsis.com/archives/bugtraq/2002-12/0019.html Exploit
http://www.securityfocus.com/bid/6294
http://www.securityfocus.com/bid/6299
http://www.securityfocus.com/bid/6300
https://exchange.xforce.ibmcloud.com/vulnerabilities/10743
https://exchange.xforce.ibmcloud.com/vulnerabilities/10779
https://exchange.xforce.ibmcloud.com/vulnerabilities/10780
http://archives.neohapsis.com/archives/bugtraq/2002-12/0019.html Exploit
http://www.securityfocus.com/bid/6294
http://www.securityfocus.com/bid/6299
http://www.securityfocus.com/bid/6300
https://exchange.xforce.ibmcloud.com/vulnerabilities/10743
https://exchange.xforce.ibmcloud.com/vulnerabilities/10779
https://exchange.xforce.ibmcloud.com/vulnerabilities/10780

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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-2002-2253), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.