Paper/Archive/CVE-2026-2805

CVE-2026-2805

Mozilla Firefox — Invalid pointer in the DOM: Core & HTML component

EPSS 0.7%CVSS 9.8

critical.is priorityof 100

40

CVSS 9.8 (ADP, NVD agree)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 51.5.515 × 2010.3 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

Invalid pointer in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

Affected

ProductAffectedFixed inSource

Firefoxsee advisory148CNA

Thunderbirdsee advisory148CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD9.8CVSS: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=2014549 refmozilla.org/security/advisories/mfsa2026-13 refmozilla.org/security/advisories/mfsa2026-16