CVE-2024-7527

HIGH 8.8CVE-2024-7527 · Published 06/08/2024 · updated 17/06/2026

In short

CVE-2024-7527 is a HIGH (CVSS 8.8) vulnerability affecting firefox (mozilla), firefox esr (mozilla), thunderbird (mozilla).
Chance of exploitation in the next 30 days (EPSS): 0.61%, higher than 49.0% of all vulnerabilities.
Fix: update to 129.0, 115.14.0 or later.

Package	Affected versions	Patched versions
firefox mozilla	`< 129.0`	`129.0`
firefox esr mozilla	`= 128.0< 115.14.0`	`115.14.0`
thunderbird mozilla	`= 128.0.1< 115.14.0`	`115.14.0`

Description

Unexpected marking work at the start of sweeping could have led to a use-after-free. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, Firefox ESR < 128.1, Thunderbird < 128.1, and Thunderbird < 115.14.

References

bugzilla.mozilla.org/show_bug.cgi · Issue Tracking
mozilla.org/security/advisories/mfsa2024-33 · Vendor Advisory
mozilla.org/security/advisories/mfsa2024-34 · Vendor Advisory
mozilla.org/security/advisories/mfsa2024-35 · Vendor Advisory
mozilla.org/security/advisories/mfsa2024-37 · Vendor Advisory
mozilla.org/security/advisories/mfsa2024-38 · Vendor Advisory

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Package

Affected versions

Patched versions

firefox

mozilla

< 129.0

129.0

firefox esr

mozilla

= 128.0< 115.14.0

115.14.0

thunderbird

mozilla

= 128.0.1< 115.14.0

115.14.0

More vulnerabilities in firefox

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