CVE-2019-9810

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

Incorrect alias information in IonMonkey JIT compiler for Array.prototype.slice method may lead to missing bounds check and a buffer overflow. This vulnerability affects Firefox < 66.0.1, Firefox ESR < 60.6.1, and Thunderbird < 60.6.1.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-119

Affected software

Vendor	Product	Versions
Mozilla	Firefox	>= unspecified, < 66.0.1
Mozilla	Firefox ESR	>= unspecified, < 60.6.1
Mozilla	Thunderbird	>= unspecified, < 60.6.1

References

http://packetstormsecurity.com/files/155592/Mozilla-Firefox-Windows-64-Bit-Chain-Exploit.htmlExploit, Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2019:0966Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1144Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1537924Exploit, Issue Tracking, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-09/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-10/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-12/Vendor Advisory
http://packetstormsecurity.com/files/155592/Mozilla-Firefox-Windows-64-Bit-Chain-Exploit.htmlExploit, Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2019:0966Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1144Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1537924Exploit, Issue Tracking, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-09/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-10/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-12/Vendor Advisory

Timeline

Published: Apr 26, 2019
Last modified: Jun 17, 2026
NVD status: Modified

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