CVE-2004-1638
CVE-2004-1638 is a high-severity vulnerability with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 63% places it in the 99th percentile, indicating an elevated likelihood of exploitation.
Key facts
- Severity: High (CVSS 2.0 base score 7.5)
- EPSS exploit prediction: 63% (99th percentile)
- Actively exploited: Not listed in CISA KEV
- Published:
- Last modified:
Description
Buffer overflow in MailCarrier 2.51 allows remote attackers to execute arbitrary code via a long (1) EHLO and possibly (2) HELO command.
Frequently asked questions
- What is CVE-2004-1638?
- Buffer overflow in MailCarrier 2.51 allows remote attackers to execute arbitrary code via a long (1) EHLO and possibly (2) HELO command.
- How severe is CVE-2004-1638?
- CVE-2004-1638 has a CVSS 2.0 base score of 7.5, rated high severity.
- Is CVE-2004-1638 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 63% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2004-1638?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2004-1638 published?
- CVE-2004-1638 was published on 2004-10-16 and last updated on 2026-06-16.