CVE-2005-2151

spf.c in Courier Mail Server does not properly handle DNS failures when looking up Sender Policy Framework (SPF) records, which could allow attackers to cause memory corruption.

Published: 2005-07-06 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2005-2151 is rated Moderate Risk (40/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.92%). 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-2005-2151

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 0.34% 0.92% +0.58%
2 2025-03-30 0.38% 0.34% -0.04%
3 2025-03-29 — 0.38% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2005-2151

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:P/A:N 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:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2005-2151

OS Trackers for CVE-2005-2151

vendor priority summary link
debian low CVE-2005-2151 low priority: Debian including 1 source packages (courier), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2005-2151
ubuntu medium CVE-2005-2151 medium priority: Ubuntu including 1 source packages (courier), 4 status rows across 4 suites (dapper, edgy, feisty, upstream): released 3, needs-triage 1. https://ubuntu.com/security/CVE-2005-2151

Affected software / configurations for CVE-2005-2151

Vendor Product Version Raw CPE
double_precision_incorporated courier_mail_server 0.46 cpe:2.3:a:double_precision_incorporated:courier_mail_server:0.46:*:*:*:*:*:*:*
double_precision_incorporated courier_mail_server 0.47 cpe:2.3:a:double_precision_incorporated:courier_mail_server:0.47:*:*:*:*:*:*:*
double_precision_incorporated courier_mail_server 0.48 cpe:2.3:a:double_precision_incorporated:courier_mail_server:0.48:*:*:*:*:*:*:*
double_precision_incorporated courier_mail_server 0.48.1 cpe:2.3:a:double_precision_incorporated:courier_mail_server:0.48.1:*:*:*:*:*:*:*
double_precision_incorporated courier_mail_server 0.48.2 cpe:2.3:a:double_precision_incorporated:courier_mail_server:0.48.2:*:*:*:*:*:*:*
double_precision_incorporated courier_mail_server 0.49.0 cpe:2.3:a:double_precision_incorporated:courier_mail_server:0.49.0:*:*:*:*:*:*:*
double_precision_incorporated courier_mail_server 0.50.0 cpe:2.3:a:double_precision_incorporated:courier_mail_server:0.50.0:*:*:*:*:*:*:*

References for CVE-2005-2151

cvelogic Threat Intelligence