CVE-2010-3771

6.8 MEDIUM 2% exploit odds Fix listed

What it is

Mozilla Firefox before 3.5.16 and 3.6.x before 3.6.13, and SeaMonkey before 2.0.11, does not properly handle injection of an ISINDEX element into an about:blank page, which allows remote attackers to execute arbitrary JavaScript code with chrome privileges via vectors related to redirection to a chrome: URI.

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

2010-12-10 19:00 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:23 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: 6.8 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2010-12-10 19:00 UTC
Last modified: 2026-06-16 23:23 UTC
Exploit probability: 2.3% · EPSS, next 30 days
Record status: Modified

Affected

Mozilla Firefox 3.6
Mozilla Firefox 3.6.2
Mozilla Firefox 3.6.3
Mozilla Firefox 3.6.4
Mozilla Firefox 3.6.6
Mozilla Firefox 3.6.7
Mozilla Firefox 3.6.8
Mozilla Firefox 3.6.9

Attack profile CVSS 2.0 · 6.8

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

Raw vector

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

Is it in your code?

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Fix and advisories

References

NVD record · CVE.org record