VulnerabilityModified

CVE-2006-2723

Unspecified versions of Mozilla Firefox allow remote attackers to cause a denial of service (crash) via a web page that contains a large number of nested marquee tags.

EXPLOIT ✓MEDIUM 5.0EPSS 3.00%

Does this matter?

A public exploit is published in Exploit-DB (verified), so the technical barrier is gone even though the severity is medium and EPSS is 3.0%. Treat it as high on anything reachable from the internet.

Description

Unspecified versions of Mozilla Firefox allow remote attackers to cause a denial of service (crash) via a web page that contains a large number of nested marquee tags. NOTE: a followup post indicated that the initial report could not be verified.

CVSS 2.0: 5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS: 3.00% probability · 87th percentile
Public exploits: 1 in Exploit-DB · verified · first 2 June 2006
CISA KEV: Not listed
Affected: mozilla/firefox
Source: cve@mitre.org

EPSS trend

EPSS 3.0% 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.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-ID	Title	Type	Published	Verified
EDB-1867 source ↗	Mozilla Firefox 1.5.0.4 - 'marquee' Denial of Servicemultiple · n00b	dos	2 June 2006	yes

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.