CVE-2009-1834
MEDIUM · CVSS 4.3EPSS 3.2%EU EUVD
Visual truncation vulnerability in netwerk/dns/src/nsIDNService.cpp in Mozilla Firefox before 3.0.11 and SeaMonkey before 1.1.17 allows remote attackers to spoof the location bar via an IDN with invalid Unicode characters that are displayed as whitespace, as demonstrated by the \u115A through \u115E characters.
Key facts
- CVSS score
- 4.3 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:M/Au:N/C:N/I:P/A:N- Weakness (CWE)
- CWE-20
- EPSS score
- 3.2% (88th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-1829)
- Published
- June 12, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-1829 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
and 82 more…
References
- http://osvdb.org/55162
- http://secunia.com/advisories/35331(Vendor Advisory)
- http://secunia.com/advisories/35415
- http://secunia.com/advisories/35431(Vendor Advisory)
- http://secunia.com/advisories/35439(Vendor Advisory)
- http://secunia.com/advisories/35468
- http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.372468
- http://sunsolve.sun.com/search/document.do?assetkey=1-66-264308-1
- http://www.debian.org/security/2009/dsa-1820
- http://www.mozilla.org/security/announce/2009/mfsa2009-25.html(Vendor Advisory)
- http://www.securityfocus.com/bid/35326
- http://www.securityfocus.com/bid/35388
- http://www.vupen.com/english/advisories/2009/1572(Patch, Vendor Advisory)
- https://bugzilla.mozilla.org/show_bug.cgi?id=479413(Exploit)
- https://bugzilla.redhat.com/show_bug.cgi?id=503573
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10436
- https://rhn.redhat.com/errata/RHSA-2009-1095.html
- https://www.redhat.com/archives/fedora-package-announce/2009-June/msg00574.html
- https://www.redhat.com/archives/fedora-package-announce/2009-June/msg00657.html
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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