CVE-2023-4576

HIGH

Firefox < 117.0 - Heap Buffer Overflow via RecordedSourceSurfaceCreation Integer Overflow

Title source: llm
STIX 2.1

Description

On Windows, an integer overflow could occur in `RecordedSourceSurfaceCreation` which resulted in a heap buffer overflow potentially leaking sensitive data that could have led to a sandbox escape. *This bug only affects Firefox on Windows. Other operating systems are unaffected.* This vulnerability affects Firefox < 117, Firefox ESR < 102.15, Firefox ESR < 115.2, Thunderbird < 102.15, and Thunderbird < 115.2.

References (6)

Core 6

Scores

CVSS v3 8.6
EPSS 0.0024
EPSS Percentile 46.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-190
Status published
Products (3)
mozilla/firefox < 117.0
mozilla/firefox_esr < 102.15
mozilla/thunderbird < 115.2
Published Sep 11, 2023
Tracked Since Feb 18, 2026