CVE-2026-15718

MEDIUM

Invalid pointer in the JavaScript: WebAssembly component

Title source: cna
STIX 2.1

Description

We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 140.13, and Thunderbird 140.13.

References (4)

Core 4

Scores

CVSS v3 4.3
EPSS 0.0038
EPSS Percentile 30.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-763
Status published
Products (4)
mozilla/firefox < 152.0.6
Mozilla/Firefox 140.13 - 140.*
Mozilla/Firefox 152.0.6
Mozilla/Thunderbird 140.13
Published Jul 14, 2026
Tracked Since Jul 14, 2026