VulnerabilityModified
CVE-2024-6609
This vulnerability affects Firefox < 128 and Thunderbird < 128.
HIGH 8.8EPSS 0.58%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.58%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
When almost out-of-memory an elliptic curve key which was never allocated could have been freed again. This vulnerability affects Firefox < 128 and Thunderbird < 128.
- 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
- 0.58% probability · 47th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- mozilla/firefox · mozilla/thunderbird
- Source
- security@mozilla.org
EPSS 0.6% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1839258Issue Tracking, Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2024-29/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2024-32/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1839258Issue Tracking, Permissions Required
- https://lists.debian.org/debian-lts-announce/2024/10/msg00028.html
- https://www.mozilla.org/security/advisories/mfsa2024-29/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2024-32/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.