HarborGuard / CVE
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HIGHCVE-2026-5735Published Modified CNA mozilla

CVE-2026-5735: Memory safety bugs fixed in Firefox 149.0.2 and Thunderbird 149.0.2

Memory safety bugs present in Firefox 149.0.1 and Thunderbird 149.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 149.0.2 and Thunderbird 149.0.2.

Metrics

CVSS v3.1
8.1
Severity
HIGH
Fixed in
149.0.2
Affected Products
2

Fix available

149.0.2
Affected packages
  • Mozilla / Firefox
    Fixed in 149.0.2
  • Mozilla / Thunderbird
    Fixed in 149.0.2
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References