CVE-2013-1699
The Internationalized Domain Name (IDN) display algorithm in Mozilla Firefox before 22.0 does not properly handle the .com, .name, and .net top-level domains, which allows remote attackers to spoof the address bar via unspecified homograph characters.
Does this matter?
Lower severity and a low EPSS score (2.08%). Track it; it rarely justifies an emergency change on its own.
Description
The Internationalized Domain Name (IDN) display algorithm in Mozilla Firefox before 22.0 does not properly handle the .com, .name, and .net top-level domains, which allows remote attackers to spoof the address bar via unspecified homograph characters.
- CVSS 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N
- EPSS
- 2.08% probability · 81th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-310
- Affected
- mozilla/firefox
- Source
- security@mozilla.org
EPSS 2.1% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00005.html
- http://www.mozilla.org/security/announce/2013/mfsa2013-61.htmlVendor Advisory
- http://www.ubuntu.com/usn/USN-1890-1
- https://bugzilla.mozilla.org/show_bug.cgi?id=840882
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17296
- http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00005.html
- http://www.mozilla.org/security/announce/2013/mfsa2013-61.htmlVendor Advisory
- http://www.ubuntu.com/usn/USN-1890-1
- https://bugzilla.mozilla.org/show_bug.cgi?id=840882
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17296
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.