CVE-2005-4445

Off-by-one error in Pegasus Mail 4.21a through 4.21c and 4.30PB1 allows remote attackers to execute arbitrary code via a long email message header, which triggers a one-byte buffer overflow.

Published: 2005-12-21 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2005-4445 is rated Moderate Risk (48.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.09%). 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-2005-4445

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 4.82% 3.09% -1.73%
2 2025-03-30 3.72% 4.82% +1.10%
3 2025-03-29 — 3.72% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2005-4445

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.1 2.0 MEDIUM
AV:N/AC:H/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:H)
Exploitation requires uncommon or highly specific conditions.
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.
 4.9 6.4 [email protected]

Weakness enumeration for CVE-2005-4445

Affected software / configurations for CVE-2005-4445

Vendor Product Version Raw CPE
david_harris pegasus_mail 4.21a cpe:2.3:a:david_harris:pegasus_mail:4.21a:*:*:*:*:*:*:*
david_harris pegasus_mail 4.21b cpe:2.3:a:david_harris:pegasus_mail:4.21b:*:*:*:*:*:*:*
david_harris pegasus_mail 4.21c cpe:2.3:a:david_harris:pegasus_mail:4.21c:*:*:*:*:*:*:*
david_harris pegasus_mail 4.30pb1 cpe:2.3:a:david_harris:pegasus_mail:4.30pb1:*:*:*:*:*:*:*

References for CVE-2005-4445

cvelogic Threat Intelligence