CVE-2009-2478

Exp

Mozilla Firefox 3.5 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via unspecified vectors, related to a "flash bug."

Published: 2009-07-16 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-2478 is rated High Exploit Risk (71.6/100): CVSS Medium severity, with high exploitation likelihood (EPSS 7.81%, 94th percentile). 3 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +3.74% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2009-2478

EDB-ID Source Kind Published Link
9181 exploit_db edb 2009-07-17 Exploit-DB ↗
9137 exploit_db edb 2009-07-13 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2009-2478

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 4.07% 7.81% +3.74%
2 2025-03-30 5.56% 4.07% -1.49%
3 2025-03-29 — 5.56% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-2478

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:N/A:P 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:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2009-2478

OS Trackers for CVE-2009-2478

vendor priority summary link
gentoo high CVE-2009-2478: 1 GLSA(s) (201301-01), 14 atom(s) (dev-libs/nss, mail-client/mozilla-thunderbird, …); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2009-2478
redhat critical — https://access.redhat.com/security/cve/CVE-2009-2478
ubuntu low CVE-2009-2478 low priority: Ubuntu including 2 source packages (firefox-3.5, xulrunner-1.9.1), 10 status rows across 5 suites (dapper, hardy, intrepid, jaunty, upstream): DNE 6, needs-triage 2, released 2. https://ubuntu.com/security/CVE-2009-2478

Affected software / configurations for CVE-2009-2478

Vendor Product Version Raw CPE
mozilla firefox 3.5 cpe:2.3:a:mozilla:firefox:3.5:*:*:*:*:*:*:*

References for CVE-2009-2478

cvelogic Threat Intelligence