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.

Published: 2013-06-25 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-1699 is rated Moderate Risk (49.3/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.08%). EPSS rose +1.68% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2013-1699

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 0.40% 2.08% +1.68%
2 2025-03-30 1.21% 0.40% -0.81%
3 2025-03-29 — 1.21% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-1699

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2013-1699

OS Trackers for CVE-2013-1699

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2013-1699
suse medium CVE-2013-1699 severity moderate: SUSE including 48 source package names (MozillaFirefox, MozillaFirefox-140.2.0-160000.1.2, …), 129 product×package rows across 48 product lines (SUSE CaaS Platform 4.5, SUSE Enterprise Storage 7, … (48 product lines)): Known Not Affected 69, Fixed 60. https://www.suse.com/security/cve/CVE-2013-1699/
ubuntu low CVE-2013-1699 low priority: Ubuntu including 1 source packages (firefox), 5 status rows across 5 suites (lucid, precise, quantal, raring, upstream): released 4, ignored 1. https://ubuntu.com/security/CVE-2013-1699

Affected software / configurations for CVE-2013-1699

Vendor Product Version Raw CPE
mozilla firefox <= 21.0 cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
mozilla firefox 19.0 cpe:2.3:a:mozilla:firefox:19.0:*:*:*:*:*:*:*
mozilla firefox 19.0.1 cpe:2.3:a:mozilla:firefox:19.0.1:*:*:*:*:*:*:*
mozilla firefox 19.0.2 cpe:2.3:a:mozilla:firefox:19.0.2:*:*:*:*:*:*:*
mozilla firefox 20.0 cpe:2.3:a:mozilla:firefox:20.0:*:*:*:*:*:*:*
mozilla firefox 20.0.1 cpe:2.3:a:mozilla:firefox:20.0.1:*:*:*:*:*:*:*

References for CVE-2013-1699

cvelogic Threat Intelligence