by Kastro
Paper/Archive/CVE-2025-8042

CVE-2025-8042

Mozilla Firefox — Sandboxed iframe could start downloads

EPSS 0.5%CVSS 9.8
critical.is priorityof 100
38
CVSS 9.8 (ADP)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 41.0.410 × 208.2No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Firefox for Android allowed a sandboxed iframe without the `allow-downloads` attribute to start downloads. This vulnerability was fixed in Firefox 141.

Affected

ProductAffectedFixed inSource
Firefoxsee advisory141CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refbugzilla.mozilla.org/show_bug.cgi?id=1791322refmozilla.org/security/advisories/mfsa2025-56