What is CVE-2002-1721?

CVE-2002-1721 is a high-severity vulnerability in Pldaniels Altermime, classified under Off-by-one Error. CVSS score: 7.5/10. Published 2002-12-31.

How severe is CVE-2002-1721?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Pldaniels Altermime

CVE-2002-1721

Off-by-one error in alterMIME 0.1.10 and 0.1.11 allows remote attackers to cause a denial of service (crash) via an x-header that causes snprintf overwrite the FFGET_FILE variable with a (null) byte.

Published 2002-12-31 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.023 (82.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000

Affected products

Pldaniels Altermime — versions 0.1.10, 0.1.11

Weakness classification (CWE)

CWE-193 — Off-by-one Error

References

exchange.xforce.ibmcloud.com/vulnerabilities/8992 (VDB Entry, Third Party Advisory, vdb-entry)
www.securityfocus.com/bid/4650 (Patch, VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
www.pldaniels.com/altermime/CHANGELOG (Release Notes)

Frequently asked questions

What is CVE-2002-1721?: CVE-2002-1721 is a high-severity vulnerability in Pldaniels Altermime, classified under Off-by-one Error. CVSS score: 7.5/10. Published 2002-12-31.
How severe is CVE-2002-1721?: High severity. CVSS v3 base score is 7.5 out of 10.