CVE-2026-2777

严重 9.8CVE-2026-2777 · Published 24/02/2026 · updated 15/07/2026

要点

CVE-2026-2777 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）：0.44%，高于 38.2% 的漏洞。
修复：升级到 140.8.0, 115.33.0, 148.0 或更高版本。

Package	Affected versions	Patched versions
firefox mozilla	`≥ 128.0, < 140.8.0< 115.33.0< 148.0`	`140.8.0115.33.0148.0`
thunderbird mozilla	`< 140.8.0< 148.0`	`140.8.0148.0`

Description

Privilege escalation in the Messaging System component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

References

bugzilla.mozilla.org/show_bug.cgi · Issue Tracking
mozilla.org/security/advisories/mfsa2026-13 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-14 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-15 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-16 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-17 · Vendor Advisory
access.redhat.com/errata/RHSA-2026:3338
access.redhat.com/errata/RHSA-2026:3339
access.redhat.com/errata/RHSA-2026:3361
access.redhat.com/errata/RHSA-2026:3491
access.redhat.com/errata/RHSA-2026:3492
access.redhat.com/errata/RHSA-2026:3493
access.redhat.com/errata/RHSA-2026:3494

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