CVE-2018-18498

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

A potential vulnerability leading to an integer overflow can occur during buffer size calculations for images when a raw value is used instead of the checked value. This leads to a possible out-of-bounds write. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.

Metrics

CVSS 3.0 9.8/10CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-190CWE-787

Affected software

VendorProductVersions
MozillaThunderbird>= unspecified, < 60.4
MozillaFirefox ESR>= unspecified, < 60.4
MozillaFirefox>= unspecified, < 64

References

Timeline

Published
Feb 28, 2019
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2018-18498: Critical severity, CVSS 9.8 | Vulnix