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

Routine

MEDIUM 6.8DOWNGRADE

CVE-2009-3477 is a medium-severity flaw (CVSS 6.8) affecting blackberry device software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-310
Published	2009-09-29
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: rim

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2009-09-29 23:30 UTCPublished CVE record published
2026-06-16 23:11 UTCUpdated Record last modified

rim blackberry device software DOWNGRADE

Affected: 4.5.0 · 4.6 · 4.6.1 · 4.7 · 4.7.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.5.0

1. Check installed version

apt-cache policy blackberry-device-software || rpm -q blackberry-device-software || blackberry-device-software --version

2. No fixed release: DOWNGRADE to a release before 4.5.0 (Debian / Ubuntu)

apt-cache madison blackberry-device-software sudo apt install blackberry-device-software=<VERSION_BEFORE_4.5.0> sudo apt-mark hold blackberry-device-software

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list blackberry-device-software sudo dnf downgrade blackberry-device-software-<VERSION_BEFORE_4.5.0> sudo dnf versionlock add blackberry-device-software

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2009-3477?

blackberry device software: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2009-3477 being exploited?

CVE-2009-3477 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2009-3477 affect?

CVE-2009-3477 affects blackberry device software. Severity is medium (CVSS 6.8). 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'

How urgent is CVE-2009-3477?

Priority 36/100. No elevated risk signals yet.

Related CVEs

CVE-2010-3934 MEDIUM 6.8 DOWNGRADE The browser in Research In Motion (RIM) BlackBerry Device Software 5.0.0.593 Platform 5.1.0.147 on the BlackBe

References

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