HarborGuard / CVE
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HIGHCVE-2026-4718Published Modified CNA mozilla

CVE-2026-4718: Undefined behavior in the WebRTC: Signaling component

Undefined behavior in the WebRTC: Signaling component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

Metrics

CVSS v3.1
8.1
Severity
HIGH
Fixed in
140.9
Affected Products
2

Fix available

140.9149
Affected packages
  • Mozilla / Firefox
    Fixed in 140.9, 149
  • Mozilla / Thunderbird
    Fixed in 140.9, 149
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
References