CVE-2009-2632

CVE-2009-2632 is a medium-severity vulnerability in Cmu Cyrus Imap Server with a CVSS 2.0 base score of 4.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

• Severity: Medium (CVSS 2.0 base score 4.4)
• EPSS exploit prediction: 0% (38th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Cmu Cyrus Imap Server
• Published: 2009-09-08
• Last modified: 2026-06-16

Description

Buffer overflow in the SIEVE script component (sieve/script.c), as used in cyrus-imapd in Cyrus IMAP Server 2.2.13 and 2.3.14, and Dovecot 1.0 before 1.0.4 and 1.1 before 1.1.7, allows local users to execute arbitrary code and read or modify arbitrary messages via a crafted SIEVE script, related to the incorrect use of the sizeof operator for determining buffer length, combined with an integer signedness error.

Frequently asked questions

What is CVE-2009-2632?

Buffer overflow in the SIEVE script component (sieve/script.c), as used in cyrus-imapd in Cyrus IMAP Server 2.2.13 and 2.3.14, and Dovecot 1.0 before 1.0.4 and 1.1 before 1.1.7, allows local users to execute arbitrary code and read or modify arbitrary messages via a crafted SIEVE script, related to the incorrect use of the sizeof operator for determining buffer length, combined with an integer signedness error.

How severe is CVE-2009-2632?

CVE-2009-2632 has a CVSS 2.0 base score of 4.4, rated medium severity.

Is CVE-2009-2632 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-2632?

CVE-2009-2632 primarily affects Cmu Cyrus Imap Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-2632?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-2632 published?

CVE-2009-2632 was published on 2009-09-08 and last updated on 2026-06-16.

References

• http://dovecot.org/list/dovecot-news/2009-September/000135.html
• http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html
• http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html
• http://secunia.com/advisories/36629
• http://secunia.com/advisories/36632
• http://secunia.com/advisories/36698
• http://secunia.com/advisories/36713
• http://secunia.com/advisories/36904
• http://support.apple.com/kb/HT4077
• http://www.debian.org/security/2009/dsa-1881
• http://www.openwall.com/lists/oss-security/2009/09/14/3
• http://www.osvdb.org/58103
• http://www.securityfocus.com/bid/36296
• http://www.securityfocus.com/bid/36377
• http://www.ubuntu.com/usn/USN-838-1
• http://www.vupen.com/english/advisories/2009/2559
• http://www.vupen.com/english/advisories/2009/2641
• https://bugzilla.andrew.cmu.edu/cgi-bin/cvsweb.cgi/src/sieve/script.c.diff?r1=1.62&r2=1.62.2.1&only_with_tag=cyrus-imapd-2_2-tail
• https://lists.andrew.cmu.edu/pipermail/cyrus-cvs/2009-September/001253.html
• https://lists.andrew.cmu.edu/pipermail/cyrus-cvs/2009-September/001254.html
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10082
• https://www.redhat.com/archives/fedora-package-announce/2009-September/msg00491.html

Affected products (2)

• cpe:2.3:a:cmu:cyrus_imap_server:2.2.13:*:*:*:*:*:*:*
• cpe:2.3:a:cmu:cyrus_imap_server:2.3.14:*:*:*:*:*:*:*

More vulnerabilities in Cmu Cyrus Imap Server

• CVE-2011-3208 — High (CVSS 7.5): Stack-based buffer overflow in the split_wildmats function in nntpd.c in nntpd in Cyrus IMAP Server before 2.3.17 and…
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• CVE-2011-3481 — Medium (CVSS 4.3): The index_get_ids function in index.c in imapd in Cyrus IMAP Server before 2.4.11, when server-side threading is…

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