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CVE-2004-0905: Mozilla Firefox before the Preview Release, Mozilla before 1.7.3, and Thunderbird before 0.8 allows remote att

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MEDIUM 4.6WATCHLISTDOWNGRADEDOWNGRADEDOWNGRADE

CVE-2004-0905 is a medium-severity flaw (CVSS 4.6) affecting firefox, mozilla, navigator. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Mozilla Firefox before the Preview Release, Mozilla before 1.7.3, and Thunderbird before 0.8 allows remote attackers to perform cross-domain scripting and possibly execute arbitrary code by convincing a user to drag and drop javascript: links to a frame or page in another domain.

Why this priority

  • Public exploit reference
  • On your watchlist

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

Risk facts

CVSS score4.6 (Medium)
EPSS exploit chance3.0% (top 12%)
CISA exploited listNo
Published2004-09-14
Last modified2026-06-16
Publisher (CNA): MITRE · Vendor: conectiva · mozilla · netscape · redhat

Share: LinkedIn · X · Reddit

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

Am I affected?

Timeline

mozilla firefox DOWNGRADE
Affected: 0.8 · 0.9 · 0.9 rc · 0.9.1 · 0.9.2 · 0.9.3
Fixed in: no fixed release known
Safe to downgrade to: a release before 0.8
1. Check installed version
apt-cache policy firefox || rpm -q firefox || firefox --version
2. No fixed release: DOWNGRADE to a release before 0.8 (Debian / Ubuntu)
apt-cache madison firefox sudo apt install firefox=<VERSION_BEFORE_0.8> sudo apt-mark hold firefox
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list firefox sudo dnf downgrade firefox-<VERSION_BEFORE_0.8> sudo dnf versionlock add firefox
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.
mozilla mozilla DOWNGRADE
Affected: 1.0 · 1.0 rc1 · 1.0 rc2 · 1.0.1 · 1.0.2 · 1.1 · 1.1 alpha · 1.1 beta
Fixed in: no fixed release known
Safe to downgrade to: a release before 1.0
1. Check installed version
apt-cache policy mozilla || rpm -q mozilla || mozilla --version
2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)
apt-cache madison mozilla sudo apt install mozilla=<VERSION_BEFORE_1.0> sudo apt-mark hold mozilla
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list mozilla sudo dnf downgrade mozilla-<VERSION_BEFORE_1.0> sudo dnf versionlock add mozilla
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.
netscape navigator DOWNGRADE
Affected: 7.0 · 7.0.2 · 7.1 · 7.2
Fixed in: no fixed release known
Safe to downgrade to: a release before 7.0
1. Check installed version
apt-cache policy navigator || rpm -q navigator || navigator --version
2. No fixed release: DOWNGRADE to a release before 7.0 (Debian / Ubuntu)
apt-cache madison navigator sudo apt install navigator=<VERSION_BEFORE_7.0> sudo apt-mark hold navigator
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list navigator sudo dnf downgrade navigator-<VERSION_BEFORE_7.0> sudo dnf versionlock add navigator
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.
conectiva linux MITIGATE
Affected: 9.0 · 10.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 9.0
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
redhat enterprise linux MITIGATE
Affected: 2.1 · 3.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 2.1
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
redhat enterprise linux desktop MITIGATE
Affected: 3.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 3.0
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
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-2004-0905?

firefox: downgrade or apply the listed mitigation; mozilla: downgrade or apply the listed mitigation; navigator: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2004-0905 being exploited?

CVE-2004-0905 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-2004-0905 affect?

CVE-2004-0905 affects firefox, mozilla, navigator. Severity is medium (CVSS 4.6). Mozilla Firefox before the Preview Release, Mozilla before 1.7.3, and Thunderbird before 0.8 allows remote attackers to perform cross-domain scripting and possibly execute arbitrary code by convincing a user to drag and drop javascript: lin

How urgent is CVE-2004-0905?

Priority 48/100. Public exploit reference; On your watchlist

Software pages

Mozilla Firefox vulnerabilities · Mozilla Thunderbird vulnerabilities

Related CVEs

References

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