CVE-2009-1232

4.3 MEDIUM 5% exploit odds No fix listed Denial of service Browser & mail

What it is

Mozilla Firefox 3.0.8 and earlier 3.0.x versions allows remote attackers to cause a denial of service (memory corruption) via an XML document composed of a long series of start-tags with no corresponding end-tags. NOTE: it was later reported that 3.0.10 and earlier are also affected.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 5.5% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2009-04-02 17:30 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:06 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 5.5% in the next 30 days (EPSS).
Severity: 4.3 MEDIUM (CVSS).
Fix: none linked yet, which raises it.

Details

Published: 2009-04-02 17:30 UTC
Last modified: 2026-06-16 23:06 UTC
Exploit probability: 5.5% · EPSS, next 30 days
Weakness: CWE-20 · Improper input validation
Record status: Modified

Affected

Mozilla Firefox 3.0
Mozilla Firefox 3.0.1
Mozilla Firefox 3.0.2
Mozilla Firefox 3.0.3
Mozilla Firefox 3.0.4
Mozilla Firefox 3.0.5
Mozilla Firefox 3.0.6
Mozilla Firefox 3.0.7

Attack profile CVSS 2.0 · 4.3

Attack vector: Network
Complexity: Medium
Authentication: None
Confidentiality: None
Integrity: None
Availability: Partial

Raw vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2009-1232.md and follow it. Check whether this project is affected by CVE-2009-1232. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

· More options · Status badge

Download Square Reddit

References

NVD record · CVE.org record