CVE-2004-1067

CRITICAL

Off-by-one error in the mysasl_canon_user function in Cyrus IMAP Server 2.2.9 and earlier leads to a buffer overflow, which may allow remote attackers to execute arbitrary code via the username.

Affects 3 products across 3 vendors.

BCS7.81
CVSS 2.010.0
EPSS5.2%
Percentile91th
PatchPatched
CVSS Vector — Plain English Remotely exploitable over the network, low complexity.
◆ SAGE Intelligence — CITED Relevance Research Team

This vulnerability was disclosed in 2005. A critical vulnerability affects Carnegie Mellon University systems (CVE-2004-1067). No public exploit code is currently available. Isolate affected systems if patching is not feasible.

BSID: BS-2005-GLOBAL-008278-C • Model: rule-based-v1 • Confidence: MEDIUM

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Frequently Asked Questions
What is CVE-2004-1067?
This vulnerability was disclosed in 2005. A critical vulnerability affects Carnegie Mellon University systems (CVE-2004-1067). No public exploit code is currently available. Isolate affected systems if patching is not feasible.
What is the CVSS score for CVE-2004-1067?
CVE-2004-1067 has CVSS 10.0 (Critical). Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C. EPSS: 5.2%.
Is CVE-2004-1067 actively exploited?
No confirmed active exploitation of CVE-2004-1067 as of 2026-05-30.
How do I remediate CVE-2004-1067?
Priority: MEDIUM. Advisory: http://www.securityfocus.com/bid/11738 PSIRT: [email protected]
What systems are affected by CVE-2004-1067?
CVE-2004-1067 affects: Carnegie Mellon University, Redhat, Ubuntu.
Vulnerability Details
CVE IDCVE-2004-1067
BSIDBS-2005-GLOBAL-008278-C BreachSpider Global ID
CVSS VectorAV:N/AC:L/Au:N/C:C/I:C/A:C
Published2005-01-10
Last Modified2026-04-16
ICS Relevance0%
SourceNVD
Official Description

Off-by-one error in the mysasl_canon_user function in Cyrus IMAP Server 2.2.9 and earlier leads to a buffer overflow, which may allow remote attackers to execute arbitrary code via the username.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

Vulnerability details: Off-by-one error in the mysasl_canon_user function in Cyrus IMAP Server 2.2.9 and earlier leads to a buffer overflow, which may allow remote attackers to execute arbitrary code via the username. CVSS vector: AV:N/AC:L/Au:N/C:C/I:C/A:C.

Exploitation Likelihood: LOW

Affected Products
VendorProductFixed Version
Carnegie Mellon University Cyrus Imap Server —
Redhat Fedora Core —
Ubuntu Ubuntu Linux —
Remediation
View Vendor Advisory →

Remediation Priority: MEDIUM

Vendor PSIRT: [email protected]
Threat Intelligence
● Threat Intelligence Validated: July 2026 | Threat Age: 7853 Days
CISA KEVNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
SAGE Enrichment Record — provenance & audit hash
Modelrule-based-v1
ConfidenceMEDIUM
Enriched At2026-05-24
SHA-512 Audit Hash6ed7c54a74e8dfc107ff2587993dd6e73d9985f878deca7369fa6b331b22b28ec3d395b93a3664aef71473bbbdbb5861dcef256bfcf13dab6cbcbb49d02fb231
Related CVEs affecting Carnegie Mellon University
CVE-2004-1012 10.0 The argument parser of the PARTIAL command in Cyrus IMAP Server 2.2.6 and ear... CVE-2004-1013 10.0 The argument parser of the FETCH command in Cyrus IMAP Server 2.2.x through 2... CVE-2004-1015 10.0 Buffer overflow in proxyd for Cyrus IMAP Server 2.2.9 and earlier, with the i... CVE-2004-1011 10.0 Stack-based buffer overflow in Cyrus IMAP Server 2.2.4 through 2.2.8, with th... CVE-2009-0688 7.5 Multiple buffer overflows in the CMU Cyrus SASL library before 2.1.23 might a...
View all Carnegie Mellon University CVEs →

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