CVE-2008-5502

5.0 MEDIUM 2% exploit odds Fix listed

What it is

The layout engine in Mozilla Firefox 3.x before 3.0.5, Thunderbird 2.x before 2.0.0.19, and SeaMonkey 1.x before 1.1.14 allows remote attackers to cause a denial of service (crash) via vectors that trigger memory corruption, related to the GetXMLEntity and FastAppendChar functions.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 2.3% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2008-12-17 23:30 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:00 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 2.3% in the next 30 days (EPSS).
Severity: 5.0 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2008-12-17 23:30 UTC
Last modified: 2026-06-16 23:00 UTC
Exploit probability: 2.3% · EPSS, next 30 days
Weakness: CWE-399
Record status: Modified

Affected

Mozilla Firefox < 2.0.0.19
Mozilla Firefox < 3.0.5
Mozilla Seamonkey < 1.1.14
Canonical Ubuntu Linux 8.04
Canonical Ubuntu Linux 8.10

Attack profile CVSS 2.0 · 5.0

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

Raw vector

AV:N/AC:L/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-2008-5502.md and follow it. Check whether this project is affected by CVE-2008-5502. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record