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Fencer Vulns
medium 5.1

CVE-2005-1476 json

Firefox 1.0.3 allows remote attackers to execute arbitrary Javascript in other domains by using an IFRAME and causing the browser to naviga…

published 2005-05-09 21 y ago modified 2026-06-16 4 mo ago also EUVD-2005-1479

cvss
5.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
16.7%
EPSS 16.7% chance of exploitation in 30 days, percentile 97%
public exploits
1
Exploit-DB

Summary

Firefox 1.0.3 allows remote attackers to execute arbitrary Javascript in other domains by using an IFRAME and causing the browser to navigate to a previous javascript: URL, which can lead to arbitrary code execution when combined with CVE-2005-1477.

Patch / fix

  • devhelp RHEL 4 0.9.2-2.4.5
  • firefox RHEL 4 1.0.4-1.4.1

red hat advisories RHSA-2005:435RHSA-2005:434

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2005-1476 updated

security flaw

  • Red Hat Enterprise Linux AS version 4 devhelp 0.9.2-2.4.5, firefox 1.0.4-1.4.1 Red Hat Enterprise Linux Desktop version 4 devhelp 0.9.2-2.4.5, firefox 1.0.4-1.4.1 Red Hat Enterprise Linux ES version 4 devhelp 0.9.2-2.4.5, firefox 1.0.4-1.4.1 Red Hat Enterprise Linux WS version 4 devhelp 0.9.2-2.4.5, firefox 1.0.4-1.4.1
    fixed: vendor fix RHSA-2005:435

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (EDB-986)
  2. Published

Exploit prediction

16.70% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-986 Mozilla Firefox 1.0.3 - Install Method Arbitrary Code Execution remote, 2005-05-07
  • greyhatsecurity.org http://greyhatsecurity.org/vulntests/ffrc.htm referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.1 AV:N/AC:H/Au:N/C:P/I:P/A:P

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.