CVE-2026-6753

HIGH

Incorrect boundary conditions in the WebRTC component

Title source: cna
STIX 2.1

Description

Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

References (35)

Core 35
Core References

Scores

CVSS v3 7.3
EPSS 0.0031
EPSS Percentile 23.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-119 CWE-787
Status published
Products (7)
mozilla/firefox < 140.10.0
mozilla/firefox < 150.0
Mozilla/Firefox 140.10 - 140.*
Mozilla/Firefox 150
mozilla/thunderbird 140.0 - 140.10.0
Mozilla/Thunderbird 140.10 - 140.*
Mozilla/Thunderbird 150
Published Apr 21, 2026
Tracked Since Apr 21, 2026