CVE-2009-1828

CVE-2009-1828 is a medium-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

Description

Mozilla Firefox 3.0.10 allows remote attackers to cause a denial of service (infinite loop, application hang, and memory consumption) via a KEYGEN element in conjunction with (1) a META element specifying automatic page refresh or (2) a JavaScript onLoad event handler for a BODY element. NOTE: it was later reported that earlier versions are also affected.

Frequently asked questions

What is CVE-2009-1828?
Mozilla Firefox 3.0.10 allows remote attackers to cause a denial of service (infinite loop, application hang, and memory consumption) via a KEYGEN element in conjunction with (1) a META element specifying automatic page refresh or (2) a JavaScript onLoad event handler for a BODY element. NOTE: it was later reported that earlier versions are also affected.
How severe is CVE-2009-1828?
CVE-2009-1828 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2009-1828 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-1828?
CVE-2009-1828 affects Mozilla Firefox. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-1828?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-1828 published?
CVE-2009-1828 was published on 2009-05-29 and last updated on 2026-06-16.

References

Affected products (1)

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