CVE-2012-0442 Memory corruption in n/a

What is CVE-2012-0442?

CVE-2012-0442 is a critical memory corruption vulnerability in Debian Debian Linux, published on 1 Feb 2012. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 3.6.26 and 4.x through 9.0, Thunderbird before 3.1.18 and 5.0 through 9.0, and SeaMonkey before 2.7 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

Which versions are affected by CVE-2012-0442?

It affects 8 products.

Products include Debian Debian Linux, Mozilla Firefox, Mozilla Seamonkey, Mozilla Thunderbird, Opensuse Opensuse, Suse Linux Enterprise Desktop and 2 more.

How do I fix CVE-2012-0442?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2012-0442 being exploited?

There is no known exploitation of CVE-2012-0442 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-mgq7-pc7j-7mm4.