CVE-2019-9788
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.
Key facts
- CVSS score
- 9.8 (v3.1)
- Severity
- CRITICAL
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
- CWE-787
- EPSS score
- 2.2% (83th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2019-19150)
- Published
- April 26, 2019
- NVD last modified
- June 17, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2019-19150 in the EU Vulnerability Database. Last updated in EUVD on August 4, 2024.
View on the EU Vulnerability DatabaseAffected products
- mozilla / firefox
- mozilla / thunderbird
- redhat / enterprise linux
- redhat / enterprise linux eus
- redhat / enterprise linux eus
- redhat / enterprise linux eus
- redhat / enterprise linux server aus
- redhat / enterprise linux server aus
- redhat / enterprise linux server tus
- redhat / enterprise linux server tus
Certified products that may be affected
25 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.
- Red Hat Enterprise Linux 8 NSS Cryptographic Module - Red Hat, Inc. - FIPS 140 5513 - active
- Red Hat Enterprise Linux 8 Kernel Cryptographic API - Red Hat, LLC - FIPS 140 5461 - active
- Red Hat Enterprise Linux 8 Kernel Cryptographic API - Red Hat, Inc. - FIPS 140 5089 - active
- Red Hat Enterprise Linux 8 OpenSSL Cryptographic Module - Red Hat®, Inc. - FIPS 140 4642 - historical
- Red Hat Enterprise Linux 8 NSS Cryptographic Module - Red Hat®, Inc. - FIPS 140 4458 - historical
See all 25 in the Security Certifications Explorer.
References
- 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)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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