CVE-2004-1638

Exp

Buffer overflow in MailCarrier 2.51 allows remote attackers to execute arbitrary code via a long (1) EHLO and possibly (2) HELO command.

Published: 2004-10-16 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2004-1638 is rated High Exploit Risk (84.7/100): CVSS High severity, with high exploitation likelihood (EPSS 79.07%, 99th percentile). 4 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +6.73% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2004-1638

EDB-ID Source Kind Published Link
16822 exploit_db edb 2010-04-30 Exploit-DB ↗
637 exploit_db edb 2004-11-16 Exploit-DB ↗
598 exploit_db edb 2004-10-26 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2004-1638

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-07-07 72.34% 79.07% +6.73%
2 2025-03-30 77.75% 72.34% -5.40%
3 2025-03-29 — 77.75% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2004-1638

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2004-1638

Affected software / configurations for CVE-2004-1638

Vendor Product Version Raw CPE
tabs_laboratories mailcarrier - —

References for CVE-2004-1638

cvelogic Threat Intelligence