CVE-2012-1939

Name: CVE-2012-1939
Creator: NVD / NIST
Published: 2012-06-05T23:55:01.56+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.16%

Last modified Jun 16, 2026

CVE-2012-1939 is a vulnerability of currently unknown severity. jsinfer.cpp in Mozilla Firefox ESR 10.x before 10.0.5 and Thunderbird ESR 10.x before 10.0.5 does not properly determine data types, which allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via crafted JavaScript code.. EPSS estimates a 3.16% chance of exploitation in the next 30 days.

Description

jsinfer.cpp in Mozilla Firefox ESR 10.x before 10.0.5 and Thunderbird ESR 10.x before 10.0.5 does not properly determine data types, which allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via crafted JavaScript code.

Metrics

EPSS Probability

3.16%

86.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	10.0
Mozilla	Firefox	10.0.1
Mozilla	Firefox	10.0.2
Mozilla	Firefox	10.0.3
Mozilla	Firefox	10.0.4
Mozilla	Thunderbird Esr	10.0
Mozilla	Thunderbird Esr	10.0.1
Mozilla	Thunderbird Esr	10.0.2
Mozilla	Thunderbird Esr	10.0.3
Mozilla	Thunderbird Esr	10.0.4

References

Timeline

Published: Jun 5, 2012
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2012-1939?

How severe is CVE-2012-1939?

Severity scoring for CVE-2012-1939 is pending analysis. The EPSS model estimates a 3.16% probability of exploitation in the next 30 days.

How do I fix CVE-2012-1939?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2012-1939?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST