CVE-2019-9818

Name: CVE-2019-9818
Creator: NVD / NIST
Published: 2019-07-23T14:15:17.28+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.3/10EPSS 0.95%

Last modified Jun 17, 2026

CVE-2019-9818 is a high-severity vulnerability rated 8.3/10 on the CVSS scale. A race condition is present in the crash generation server used to generate data for the crash reporter. This issue can lead to a use-after-free in the main process, resulting in a potentially exploitable crash and a sandbox escape. EPSS estimates a 0.95% chance of exploitation in the next 30 days.

Description

A race condition is present in the crash generation server used to generate data for the crash reporter. This issue can lead to a use-after-free in the main process, resulting in a potentially exploitable crash and a sandbox escape. *Note: this vulnerability only affects Windows. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.

Metrics

CVSS 3.1

8.3/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS Probability

0.95%

56.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 67.0
Mozilla	Firefox Esr	< 60.7
Mozilla	Thunderbird	< 60.7

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1542581Issue Tracking, Permissions Required
https://www.mozilla.org/security/advisories/mfsa2019-13/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-14/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-15/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1542581Issue Tracking, Permissions Required
https://www.mozilla.org/security/advisories/mfsa2019-13/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-14/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-15/Vendor Advisory

Timeline

Published: Jul 23, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-9818?

How severe is CVE-2019-9818?

CVE-2019-9818 has a CVSS score of 8.3/10 (HIGH severity). The EPSS model estimates a 0.95% probability of exploitation in the next 30 days.

How do I fix CVE-2019-9818?

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-2019-9818?

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

Scan your code now

Source: NVD / NIST