CVE-2012-3987

4.0 MEDIUM 1% exploit odds Fix listed

What it is

Mozilla Firefox before 16.0 on Android assigns chrome privileges to Reader Mode pages, which allows user-assisted remote attackers to bypass intended access restrictions via a crafted web site.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 1.5% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2012-10-10 17:55 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:44 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 1.5% in the next 30 days (EPSS).
Severity: 4.0 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2012-10-10 17:55 UTC
Last modified: 2026-06-16 23:44 UTC
Exploit probability: 1.5% · EPSS, next 30 days
Weakness: CWE-264
Record status: Modified

Affected

Mozilla Firefox ≤ 15.0.1
Mozilla Firefox 0.1
Mozilla Firefox 0.2
Mozilla Firefox 0.3
Mozilla Firefox 0.4
Mozilla Firefox 0.5
Mozilla Firefox 0.6
Mozilla Firefox 0.6.1

Attack profile CVSS 2.0 · 4.0

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

Raw vector

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

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-2012-3987.md and follow it. Check whether this project is affected by CVE-2012-3987. 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