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Integer Overflow or Wraparound Affecting thunderbird package, versions <1:60.4.0-1

Severity

 Recommended
0.0
critical
0
10

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Threat Intelligence

EPSS
4.03% (90th percentile)

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  • Snyk IDSNYK-ECHOLATEST-THUNDERBIRD-18319067
  • published26 Jul 2026
  • disclosed28 Feb 2019
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Introduced: 28 Feb 2019

CVE-2018-18498  (opens in a new tab)
CWE-190  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Echo:latest thunderbird to version 1:60.4.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.