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CVE-2004-1638

72
FAUCET Score

CVE-2004-1638 describes a critical buffer overflow vulnerability in TABS MailCarrier 2.51, specifically affecting the SMTP EHLO and potentially HELO commands. This flaw allows unauthenticated remote attackers to execute arbitrary code with a CVSS score of 7.5, indicating high severity due to network accessibility and complete compromise of confidentiality, integrity, and availability. While not listed on CISA's KEV catalog, exploit intelligence confirms the existence of public exploit code, including Metasploit modules and multiple entries on ExploitDB, demonstrating its exploitability. Despite its age, the high EPSS score and FAUCET Risk Score suggest a continued potential for impact, though community discussion and media coverage are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
N/AN/A
n/aCNA affected

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
62.76%
Probability of exploitation in next 30 days
EPSS Percentile
99.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: TABS MailCarrier v2.51 SMTP EHLO Overflow · Oct 26, 2004
ExploitDB: EDB-16822 · Apr 30, 2010
This CVE's current EPSS score of 0.6276 is in the 98th percentile among its peer group of 51,466 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

marc.info
secunia.com / advisories/12999
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/17861
securityfocus.com / bid/11535
ExploitVendor Advisory