The International Domain Name (IDN) support in Firefox 1.0, Camino .8.5, and Mozilla…
Priority MEDIUM 52Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
The International Domain Name (IDN) support in Firefox 1.0, Camino .8.5, and Mozilla before 1.7.6 allows remote attackers to spoof domain names using punycode encoded domain names that are decoded in URLs and SSL certificates in a way that uses homograph characters from other character sets, which facilitates phishing attacks.
Why it matters now
EPSS 0.20398 97th percentileScored 2026-11-07
Public exploit Yes 7 exploit referencesTagged by NVD
Fix Fixed Red Hat: 1 advisory
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mozilla:camino:0.8.5:*:*:*:*:*:*:* | 0.8.5 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:firefox:1.0:*:*:*:*:*:*:* | 1.0 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:mozilla:*:*:*:*:*:*:*:* | before 1.7.6 | Vulnerable | Mozilla |
| cpe:2.3:a:omnigroup:omniweb:5:*:*:*:*:*:*:* | 5 | Vulnerable | Omnigroup |
| cpe:2.3:a:opera:opera_browser:*:*:*:*:*:*:*:* | up to 7.54 | Vulnerable | Opera |
| cpe:2.3:a:opera_software:opera_web_browser:7.54:*:*:*:*:*:*:* | 7.54 | Vulnerable | Opera Software |
- cpe:2.3:a:mozilla:camino:0.8.5:*:*:*:*:*:*:* Versions 0.8.5 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:firefox:1.0:*:*:*:*:*:*:* Versions 1.0 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:mozilla:*:*:*:*:*:*:*:* Versions before 1.7.6 Vulnerable ·Mozilla
- cpe:2.3:a:omnigroup:omniweb:5:*:*:*:*:*:*:* Versions 5 Vulnerable ·Omnigroup
- cpe:2.3:a:opera:opera_browser:*:*:*:*:*:*:*:* Versions up to 7.54 Vulnerable ·Opera
- cpe:2.3:a:opera_software:opera_web_browser:7.54:*:*:*:*:*:*:* Versions 7.54 Vulnerable ·Opera Software
Remediation
Red Hat 1 advisory
- RHSA-2005:176 Released 2005-03-01 · Red Hat rating Criticalfirefox security update
- Red Hat Enterprise Linux AS version 4 firefox-1.0.1-1.4.3, firefox-1.0.1-1.4.3.i386, firefox-1.0.1-1.4.3.ia64 +1
- Red Hat Enterprise Linux Desktop version 4 firefox-1.0.1-1.4.3, firefox-1.0.1-1.4.3.i386
- Red Hat Enterprise Linux ES version 4 firefox-1.0.1-1.4.3, firefox-1.0.1-1.4.3.i386, firefox-1.0.1-1.4.3.ia64
- Red Hat Enterprise Linux WS version 4 firefox-1.0.1-1.4.3, firefox-1.0.1-1.4.3.i386, firefox-1.0.1-1.4.3.ia64
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AS version 4 | Fixed | RHSA-2005:176 |
| Red Hat Enterprise Linux Desktop version 4 | Fixed | RHSA-2005:176 |
| Red Hat Enterprise Linux ES version 4 | Fixed | RHSA-2005:176 |
| Red Hat Enterprise Linux WS version 4 | Fixed | RHSA-2005:176 |
Timeline
- 2026-10-02 Threatist record created from CVE-2005-0233
- 2026-10-03 Alias added: GHSA-9jrp-g945-8329
References
Exploit 7
Advisory 2
Sources
- CVE-2005-0233 · CVE Program
- CVE-2005-0233 · NVD
- FIRST EPSS
- GHSA-9jrp-g945-8329 · GitHub Advisory Database · CC BY 4.0
- CVE-2005-0233 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences