CVE-2022-45406
CRITICALFirefox < 107.0 and Firefox ESR < 102.5 - Use-After-Free in JavaScript Global Realm
Title source: llmDescription
If an out-of-memory condition occurred when creating a JavaScript global, a JavaScript realm may be deleted while references to it lived on in a BaseShape. This could lead to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox ESR < 102.5, Thunderbird < 102.5, and Firefox < 107.
References (4)
Core 4
Core References
Issue Tracking, Permissions Required, Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1791975
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-47/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-48/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-49/
Scores
CVSS v3
9.8
EPSS
0.0042
EPSS Percentile
62.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-416
Status
published
Products (3)
mozilla/firefox
< 107.0
mozilla/firefox_esr
< 102.5
mozilla/thunderbird
< 102.5
Published
Dec 22, 2022
Tracked Since
Feb 18, 2026