What’s Vulnerable › Vulnerabilities

CVE-2019-9790

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-04-26 · updated 2026-06-17
• Weakness: CWE-416

Description

A use-after-free vulnerability can occur when a raw pointer to a DOM element on a page is obtained using JavaScript and the element is then removed while still in use. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

Affected products

• Mozilla Firefox: through 60.6; through 66.0
• Mozilla Thunderbird: through 60.6

References

• https://access.redhat.com/errata/RHSA-2019:0966
• https://access.redhat.com/errata/RHSA-2019:1144
• https://bugzilla.mozilla.org/show_bug.cgi?id=1525145
• https://www.mozilla.org/security/advisories/mfsa2019-07/
• https://www.mozilla.org/security/advisories/mfsa2019-08/
• https://www.mozilla.org/security/advisories/mfsa2019-11/
• https://access.redhat.com/errata/RHSA-2019:0966
• https://access.redhat.com/errata/RHSA-2019:1144
• https://bugzilla.mozilla.org/show_bug.cgi?id=1525145
• https://www.mozilla.org/security/advisories/mfsa2019-07/
• https://www.mozilla.org/security/advisories/mfsa2019-08/
• https://www.mozilla.org/security/advisories/mfsa2019-11/

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