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CVE-2012-4218

Use-after-free vulnerability in the BuildTextRunsScanner::BreakSink::SetBreaks function in...

10.0 High

CVE-2012-4218 is a high vulnerability (CVSS 10.0) in Mozilla Firefox, published November 21, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 5.61%, the 93rd percentile. No source names a fixed version.

Severity
10.0 HighCVSS 2.0, NVD
Exploit chance
5.61%EPSS, 93rd percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
No fix listedNo source names one

Description

Use-after-free vulnerability in the BuildTextRunsScanner::BreakSink::SetBreaks function in Mozilla Firefox before 17.0, Thunderbird before 17.0, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

Exploit likelihood

5.61%Down 2.6 points since Feb 4, 2022
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
MozillaFirefox
openSUSE:Tumbleweed
From an advisory covering 899 CVEs
before 50.1.0-1.1
50.1.0-1.1
MozillaThunderbird
openSUSE:Tumbleweed
From an advisory covering 560 CVEs
before 45.5.1-1.1
45.5.1-1.1

What each source reports

NVD Score used10.0

Use-after-free vulnerability in the BuildTextRunsScanner::BreakSink::SetBreaks function in Mozilla Firefox before 17.0, Thunderbird before 17.0, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

Record
CVE-2012-4218
CVSS 2.0
10.0 HighAV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness
CWE-416
Updated
2026-11-02
CVE ListNo score

Use-after-free vulnerability in the BuildTextRunsScanner::BreakSink::SetBreaks function in Mozilla Firefox before 17.0, Thunderbird before 17.0, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

Record
CVE-2012-4218
Updated
2026-11-02
EUVDEUVD-2012-4162No score

Use-after-free vulnerability in the BuildTextRunsScanner::BreakSink::SetBreaks function in Mozilla Firefox before 17.0, Thunderbird before 17.0, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

Record
EUVD-2012-4162
Updated
2026-11-03
GitHub AdvisoriesGHSA-hp38-277q-5pjvNo score

Use-after-free vulnerability in the BuildTextRunsScanner::BreakSink::SetBreaks function in...

Use-after-free vulnerability in the BuildTextRunsScanner::BreakSink::SetBreaks function in Mozilla Firefox before 17.0, Thunderbird before 17.0, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

Record
GHSA-hp38-277q-5pjv
Weakness
CWE-416
Updated
2026-11-02
OSVopenSUSE-SU-2024:10071-1No score

MozillaFirefox-50.1.0-1.1 on GA media

These are all security issues fixed in the MozillaFirefox-50.1.0-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10071-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10218-1No score

seamonkey-2.40-6.1 on GA media

These are all security issues fixed in the seamonkey-2.40-6.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10218-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10230-1No score

MozillaThunderbird-45.5.1-1.1 on GA media

These are all security issues fixed in the MozillaThunderbird-45.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10230-1
Updated
2026-11-02

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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