CVE-2025-8033

MEDIUM

Firefox/Thunderbird JavaScript Engine Null Pointer Dereference

Title source: llm
STIX 2.1

Description

The JavaScript engine did not handle closed generators correctly and it was possible to resume them leading to a nullptr deref. This vulnerability was fixed in Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.

References (9)

Core 9

Scores

CVSS v3 6.5
EPSS 0.0051
EPSS Percentile 66.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-476
Status published
Products (11)
mozilla/firefox < 115.26.0
mozilla/firefox < 141.0
Mozilla/Firefox 115.26 - 115.*
Mozilla/Firefox 128.13 - 128.*
Mozilla/Firefox 140.1 - 140.*
Mozilla/Firefox 141
mozilla/thunderbird < 128.13.0
mozilla/thunderbird < 141.0
Mozilla/Thunderbird 128.13 - 128.*
Mozilla/Thunderbird 140.1 - 140.*
... and 1 more
Published Jul 22, 2025
Tracked Since Feb 18, 2026