CVE-2026-15718: medium-severity vulnerability in Mozilla Firefox
Invalid pointer in the JavaScript: WebAssembly component
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 4.3epss 0.3%
from disclosure to weapon40 days
Published on NVDJul 14
1st PoC+40d
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
public PoCs found — 1
githubgithub.com/SneakyNachos/CVE-2026-15718-who-put-ptrs-in-my-wasm★ 1⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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