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CVE-2019-9788
CRITICAL
Mozilla developers and community members reported memory safety bugs present in Firefox 65, Firefox ESR 60.5, and Thunderbird 60.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
Published: Apr 26, 2019
Modified: Jun 17, 2026
CWE-787
CVSS Metrics
CVSSv3
Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products (11)
| Vendor | Product | Version |
|---|---|---|
| mozilla | firefox | * < 60.6.0 |
| mozilla | firefox | * < 66.0 |
| mozilla | thunderbird | * < 60.6.0 |
| redhat | enterprise_linux | 8.0 |
| redhat | enterprise_linux_eus | 8.1 |
| redhat | enterprise_linux_eus | 8.2 |
| redhat | enterprise_linux_eus | 8.4 |
| redhat | enterprise_linux_server_aus | 8.2 |
| redhat | enterprise_linux_server_aus | 8.4 |
| redhat | enterprise_linux_server_tus | 8.2 |
| redhat | enterprise_linux_server_tus | 8.4 |
GitHub Security Advisory GHSA-3fgc-rx9f-4j2g
Mozilla developers and community members reported memory safety bugs present in Firefox 65,...
References (12)
- https://access.redhat.com/errata/RHSA-2019:0966 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1144 Third Party Advisory
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1518001%2C1521304%2C1521214%2C1506665%2C1516834%2C1518774%2C1524755%2C1523362%2C1524214%2C1529203 Issue Tracking, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-07/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-08/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-11/ Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:0966 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1144 Third Party Advisory
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1518001%2C1521304%2C1521214%2C1506665%2C1516834%2C1518774%2C1524755%2C1523362%2C1524214%2C1529203 Issue Tracking, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-07/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-08/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-11/ Vendor Advisory
Risk Scores
CVSS Score
9.8 / 10
EPSS Score
2.24%
Top 18% most likely to be exploited
Threat Score
39.9 / 100
Data Sources
NVD
EPSS
GitHub