CVE-2009-4129
Race condition in Mozilla Firefox allows remote attackers to produce a JavaScript message with a...
Race condition in Mozilla Firefox allows remote attackers to produce a JavaScript message with a spoofed domain association by writing the message in between the document request and document load for a web page in a different domain.
Exploit likelihood
What each source reports
NVD Score used
Race condition in Mozilla Firefox allows remote attackers to produce a JavaScript message with a spoofed domain association by writing the message in between the document request and document load for a web page in a different domain.
- Record
CVE-2009-4129- CVSS 2.0
- 5.8 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:P - Weakness
- CWE-362
- Updated
- 2026-11-02
CVE List No score
Race condition in Mozilla Firefox allows remote attackers to produce a JavaScript message with a spoofed domain association by writing the message in between the document request and document load for a web page in a different domain.
- Record
CVE-2009-4129- Updated
- 2026-11-02
EUVDEUVD-2009-4099 No score
Race condition in Mozilla Firefox allows remote attackers to produce a JavaScript message with a spoofed domain association by writing the message in between the document request and document load for a web page in a different domain.
- Record
EUVD-2009-4099- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-rr24-wwr3-8ppx No score
Race condition in Mozilla Firefox allows remote attackers to produce a JavaScript message with a...
Race condition in Mozilla Firefox allows remote attackers to produce a JavaScript message with a spoofed domain association by writing the message in between the document request and document load for a web page in a different domain.
- Record
GHSA-rr24-wwr3-8ppx- Weakness
- CWE-362
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-4129 is a medium vulnerability (CVSS 5.8) in Mozilla Firefox, published December 14, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.75%, the 55th percentile. No source names a fixed version.