CVE-2019-9792
CVSS v3
9.8
CRITICAL
EPSS Score
19.4 %
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
The IonMonkey just-in-time (JIT) compiler can leak an internal JS_OPTIMIZED_OUT magic value to the running script during a bailout. This magic value can then be used by JavaScript to achieve memory corruption, which results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
Technical details
- Published
- 2019-04-26
- Exploit-DB
- EDB-46939
Frequently asked questions
What is CVE-2019-9792?
The IonMonkey just-in-time (JIT) compiler can leak an internal JS_OPTIMIZED_OUT magic value to the running script during a bailout. This magic value can then be used by JavaScript to achieve memory corruption, which results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
Is CVE-2019-9792 actively exploited?
Active exploitation of CVE-2019-9792 has not been confirmed. The EPSS score is 19.4%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2019-9792?
CVE-2019-9792 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2019-9792 affecting your environment?
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