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.
Conclusion & alert: CVE-2005-1159 is rated Moderate Risk (59.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.95%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 3.69% | 2.95% | -0.74% |
| 2 | 2025-03-30 | 11.35% | 3.69% | -7.66% |
| 3 | 2025-03-29 | — | 11.35% | — |
Full EPSS history (8 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
gentoo
|
normal | CVE-2005-1159: 1 GLSA(s) (200504-18), 4 atom(s) (www-client/mozilla, www-client/mozilla-bin, www-client/mozilla-firefox, www-client/mozilla-firefox-bin); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2005-1159 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2005-1159 |
ubuntu
|
medium | CVE-2005-1159 medium priority: Ubuntu including 2 source packages (mozilla, mozilla-thunderbird), 10 status rows across 5 suites (dapper, edgy, feisty, gutsy, upstream): DNE 3, released 3, needs-triage 2, ignored 1, not-affected 1. | https://ubuntu.com/security/CVE-2005-1159 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| mozilla | firefox | 0.8 | cpe:2.3:a:mozilla:firefox:0.8:*:*:*:*:*:*:* |
| mozilla | firefox | 0.9 | cpe:2.3:a:mozilla:firefox:0.9:*:*:*:*:*:*:* |
| mozilla | firefox | 0.9 | cpe:2.3:a:mozilla:firefox:0.9:rc:*:*:*:*:*:* |
| mozilla | firefox | 0.9.1 | cpe:2.3:a:mozilla:firefox:0.9.1:*:*:*:*:*:*:* |
| mozilla | firefox | 0.9.2 | cpe:2.3:a:mozilla:firefox:0.9.2:*:*:*:*:*:*:* |
| mozilla | firefox | 0.9.3 | cpe:2.3:a:mozilla:firefox:0.9.3:*:*:*:*:*:*:* |
| mozilla | firefox | 0.10 | cpe:2.3:a:mozilla:firefox:0.10:*:*:*:*:*:*:* |
| mozilla | firefox | 0.10.1 | cpe:2.3:a:mozilla:firefox:0.10.1:*:*:*:*:*:*:* |
| mozilla | firefox | 1.0 | cpe:2.3:a:mozilla:firefox:1.0:*:*:*:*:*:*:* |
| mozilla | firefox | 1.0.1 | cpe:2.3:a:mozilla:firefox:1.0.1:*:*:*:*:*:*:* |
| mozilla | firefox | 1.0.2 | cpe:2.3:a:mozilla:firefox:1.0.2:*:*:*:*:*:*:* |
| mozilla | mozilla | 1.3 | cpe:2.3:a:mozilla:mozilla:1.3:*:*:*:*:*:*:* |
| mozilla | mozilla | 1.4 | cpe:2.3:a:mozilla:mozilla:1.4:*:*:*:*:*:*:* |
| mozilla | mozilla | 1.4 | cpe:2.3:a:mozilla:mozilla:1.4:alpha:*:*:*:*:*:* |
| mozilla | mozilla | 1.4.1 | cpe:2.3:a:mozilla:mozilla:1.4.1:*:*:*:*:*:*:* |
| mozilla | mozilla | 1.5 | cpe:2.3:a:mozilla:mozilla:1.5:*:*:*:*:*:*:* |
| mozilla | mozilla | 1.5 | cpe:2.3:a:mozilla:mozilla:1.5:alpha:*:*:*:*:*:* |
| mozilla | mozilla | 1.5 | cpe:2.3:a:mozilla:mozilla:1.5:rc1:*:*:*:*:*:* |
| mozilla | mozilla | 1.5 | cpe:2.3:a:mozilla:mozilla:1.5:rc2:*:*:*:*:*:* |
| mozilla | mozilla | 1.5.1 | cpe:2.3:a:mozilla:mozilla:1.5.1:*:*:*:*:*:*:* |
| mozilla | mozilla | 1.6 | cpe:2.3:a:mozilla:mozilla:1.6:*:*:*:*:*:*:* |
| mozilla | mozilla | 1.6 | cpe:2.3:a:mozilla:mozilla:1.6:alpha:*:*:*:*:*:* |
| mozilla | mozilla | 1.6 | cpe:2.3:a:mozilla:mozilla:1.6:beta:*:*:*:*:*:* |
| mozilla | mozilla | 1.7 | cpe:2.3:a:mozilla:mozilla:1.7:*:*:*:*:*:*:* |
| mozilla | mozilla | 1.7 | cpe:2.3:a:mozilla:mozilla:1.7:alpha:*:*:*:*:*:* |
| mozilla | mozilla | 1.7 | cpe:2.3:a:mozilla:mozilla:1.7:beta:*:*:*:*:*:* |
| mozilla | mozilla | 1.7 | cpe:2.3:a:mozilla:mozilla:1.7:rc1:*:*:*:*:*:* |
| mozilla | mozilla | 1.7 | cpe:2.3:a:mozilla:mozilla:1.7:rc2:*:*:*:*:*:* |
| mozilla | mozilla | 1.7 | cpe:2.3:a:mozilla:mozilla:1.7:rc3:*:*:*:*:*:* |
| mozilla | mozilla | 1.7.1 | cpe:2.3:a:mozilla:mozilla:1.7.1:*:*:*:*:*:*:* |
| mozilla | mozilla | 1.7.2 | cpe:2.3:a:mozilla:mozilla:1.7.2:*:*:*:*:*:*:* |
| mozilla | mozilla | 1.7.3 | cpe:2.3:a:mozilla:mozilla:1.7.3:*:*:*:*:*:*:* |
| mozilla | mozilla | 1.7.5 | cpe:2.3:a:mozilla:mozilla:1.7.5:*:*:*:*:*:*:* |
| mozilla | mozilla | 1.7.6 | cpe:2.3:a:mozilla:mozilla:1.7.6:*:*:*:*:*:*:* |