CVE-2026-100769

CVE CVE-2026-100769EUVD EUVD-2026-88921Published 2026-09-29T12:36:00.000ZLast changed 2026-09-30T17:20:06.000ZCVSS 8.8

What the advisory describes

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, and Firefox ESR 140.17.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Mozilla — Firefox 140.17; 153.4; 157

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Mozilla — Firefox

Does this concern one of your customers?

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Try it for 28 days

Patchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.