CVE-2009-3477

The Blackberry Browser in RIM BlackBerry Device Software 4.5.0 before 4.5.0.173, 4.6.0 before 4.6.0.303, 4.6.1 before 4.6.1.309, 4.7.0 before 4.7.0.179, and 4.7.1 before 4.7.1.57 does not properly handle "hidden" characters including a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows remote man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

Published: 2009-09-29 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-3477 is rated Moderate Risk (43/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.25%). 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-2009-3477

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 2025-03-30 0.30% 0.25% -0.05%
2 2025-03-29 0.25% 0.30% +0.05%
3 2025-03-17 — 0.25% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-3477

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 2.0 MEDIUM
AV:N/AC:M/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:M)
Exploitation needs some favorable conditions, but not exceptional ones.
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.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2009-3477

Affected software / configurations for CVE-2009-3477

Vendor Product Version Raw CPE
rim blackberry_device_software 4.5.0 cpe:2.3:a:rim:blackberry_device_software:4.5.0:*:*:*:*:*:*:*
rim blackberry_device_software 4.6 cpe:2.3:a:rim:blackberry_device_software:4.6:*:*:*:*:*:*:*
rim blackberry_device_software 4.6.1 cpe:2.3:a:rim:blackberry_device_software:4.6.1:*:*:*:*:*:*:*
rim blackberry_device_software 4.7 cpe:2.3:a:rim:blackberry_device_software:4.7:*:*:*:*:*:*:*
rim blackberry_device_software 4.7.1 cpe:2.3:a:rim:blackberry_device_software:4.7.1:*:*:*:*:*:*:*

References for CVE-2009-3477

cvelogic Threat Intelligence