CVE-2005-1477

CVE-2005-1477 is a medium-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 5.1. Its EPSS exploit-prediction score of 15% places it in the 96th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

The install function in Firefox 1.0.3 allows remote web sites on the browser's whitelist, such as update.mozilla.org or addon.mozilla.org, to execute arbitrary Javascript with chrome privileges, leading to arbitrary code execution on the system when combined with vulnerabilities such as CVE-2005-1476, as demonstrated using a javascript: URL as the package icon and a cross-site scripting (XSS) attack on a vulnerable whitelist site.

Frequently asked questions

What is CVE-2005-1477?
The install function in Firefox 1.0.3 allows remote web sites on the browser's whitelist, such as update.mozilla.org or addon.mozilla.org, to execute arbitrary Javascript with chrome privileges, leading to arbitrary code execution on the system when combined with vulnerabilities such as CVE-2005-1476, as demonstrated using a javascript: URL as the package icon and a cross-site scripting (XSS) attack on a vulnerable whitelist site.
How severe is CVE-2005-1477?
CVE-2005-1477 has a CVSS 2.0 base score of 5.1, rated medium severity.
Is CVE-2005-1477 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-1477?
CVE-2005-1477 affects Mozilla Firefox. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2005-1477?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2005-1477 published?
CVE-2005-1477 was published on 2005-05-09 and last updated on 2026-06-16.

References

Affected products (1)

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