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Fencer Vulns
high 7.5

CVE-2005-1159 json

The native implementations of InstallTrigger and other functions in Firefox before 1.0.3 and Mozilla Suite before 1.7.7 do not properly ver…

published 2005-04-18 21 y ago modified 2026-06-16 4 mo ago also EUVD-2005-1162

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.9%
EPSS 2.9% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

The native implementations of InstallTrigger and other functions in Firefox before 1.0.3 and Mozilla Suite before 1.7.7 do not properly verify the types of objects being accessed, which causes the Javascript interpreter to continue execution at the wrong memory address, which may allow attackers to cause a denial of service (application crash) and possibly execute arbitrary code by passing objects of the wrong type.

Patch / fix

  • devhelp RHEL 4 0.9.2-2.4.4
  • firefox RHEL 4 1.0.3-1.4.1
  • thunderbird RHEL 4 1.0.6-1.4.1

red hat advisories RHSA-2005:386RHSA-2005:383RHSA-2005:601

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-2005-1159 updated

security flaw

  • Red Hat Enterprise Linux AS version 4 devhelp 0.9.2-2.4.4, firefox 1.0.3-1.4.1, thunderbird 1.0.6-1.4.1 Red Hat Enterprise Linux Desktop version 4 devhelp 0.9.2-2.4.4, firefox 1.0.3-1.4.1, thunderbird 1.0.6-1.4.1 Red Hat Enterprise Linux ES version 4 devhelp 0.9.2-2.4.4, firefox 1.0.3-1.4.1, thunderbird 1.0.6-1.4.1 Red Hat Enterprise Linux WS version 4 devhelp 0.9.2-2.4.4, firefox 1.0.3-1.4.1, thunderbird 1.0.6-1.4.1
    fixed: vendor fix RHSA-2005:386

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

Exploit prediction

2.95% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/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.