CVE-2026-74936

严重 9.8CVE-2026-74936 · Published 18/08/2026 · updated 21/08/2026

要点

CVE-2026-74936 是影响 firefox (mozilla), thunderbird (mozilla) 的严重 (CVSS 9.8)漏洞。
未来 30 天内被利用的概率（EPSS）：0.59%，高于 48.3% 的漏洞。
修复：升级到 153.1.0, 140.14.0 或更高版本。

Package	Affected versions	Patched versions
firefox mozilla	`≥ 141.0.0, < 153.1.0< 140.14.0`	`153.1.0140.14.0`
thunderbird mozilla	`≥ 141.0, < 153.1.0< 140.14.0`	`153.1.0140.14.0`

Description

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.

References

bugzilla.mozilla.org/show_bug.cgi · Permissions Required
mozilla.org/security/advisories/mfsa2026-74 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-76 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-77 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-78 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-79 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-80 · Vendor Advisory

firefox 的其他漏洞

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Package

Affected versions

Patched versions

firefox

mozilla

≥ 141.0.0, < 153.1.0< 140.14.0

153.1.0140.14.0

thunderbird

mozilla

≥ 141.0, < 153.1.0< 140.14.0

153.1.0140.14.0

firefox 的其他漏洞

查看全部 →