CVE-2000-1203

Lotus Domino SMTP server 4.63 through 5.08 allows remote attackers to cause a denial of service (CPU consumption) by forging an email message with the sender as bounce@[127.0.0.1] (localhost), which causes Domino to enter a mail loop.

Published: 2001-08-20 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2000-1203 is rated Moderate Risk (50.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.47%). EPSS rose +1.36% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

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

Exploit prediction scoring system (EPSS) score for CVE-2000-1203

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 2026-06-15 1.11% 2.47% +1.36%
2 2025-10-17 0.91% 1.11% +0.20%
3 2025-03-17 — 0.91% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2000-1203

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/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:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2000-1203

Affected software / configurations for CVE-2000-1203

Vendor Product Version Raw CPE
lotus domino 4.6.1 cpe:2.3:a:lotus:domino:4.6.1:*:*:*:*:*:*:*
lotus domino 4.6.3 cpe:2.3:a:lotus:domino:4.6.3:*:*:*:*:*:*:*
lotus domino 4.6.4 cpe:2.3:a:lotus:domino:4.6.4:*:*:*:*:*:*:*
lotus domino 5.0.1 cpe:2.3:a:lotus:domino:5.0.1:*:*:*:*:*:*:*
lotus domino 5.0.2 cpe:2.3:a:lotus:domino:5.0.2:*:*:*:*:*:*:*
lotus domino 5.0.3 cpe:2.3:a:lotus:domino:5.0.3:*:*:*:*:*:*:*
lotus domino 5.0.4 cpe:2.3:a:lotus:domino:5.0.4:*:*:*:*:*:*:*
lotus domino 5.0.5 cpe:2.3:a:lotus:domino:5.0.5:*:*:*:*:*:*:*
lotus domino 5.0.6 cpe:2.3:a:lotus:domino:5.0.6:*:*:*:*:*:*:*
lotus domino 5.0.7 cpe:2.3:a:lotus:domino:5.0.7:*:*:*:*:*:*:*
lotus domino 5.0.8 cpe:2.3:a:lotus:domino:5.0.8:*:*:*:*:*:*:*

References for CVE-2000-1203

cvelogic Threat Intelligence