VulnerabilityModified
CVE-2024-7527
Unexpected marking work at the start of sweeping could have led to a use-after-free.
HIGH 8.8EPSS 0.61%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.61%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.61% probability · 47th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- mozilla/firefox · mozilla/firefox esr · mozilla/thunderbird
- Source
- security@mozilla.org
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1871303Issue Tracking, Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2024-33/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2024-34/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2024-35/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2024-37/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2024-38/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.