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CVE-2026-12297

critical · 9.6

Sandbox escape due to incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.

9.6
CVSS
0.4%
EPSS (exploit prob.)
33rd
EPSS percentile
2026-06-16
Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Weaknesses

CWE-119CWE-653

Affected products

VendorProductAffected versions
mozillafirefox< 115.37.0
mozillafirefox< 152.0.0
mozillafirefox>= 128.0, < 140.12.0
mozillathunderbird< 140.12.0
mozillathunderbird< 152.0.0

Check a specific version with /api/v1/cve/match.

References

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-12297