CVE-2026-84144

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

Not scored by EPSS

EPSS percentile

Not scored by EPSS

NVD base score

The NVD has published no score for this record

NVD CVSS vector

No NVD score to derive

NVD analysis status

Not recorded

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-09-01 12:19Z47 MIN AGO

Last updated

2026-09-01 12:19Z47 MIN AGO

Reserved

2026-09-01

Assigning CNA

mozilla

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

No CWE assigned

Data version

5.2

Document digest

35ac18996e90cd98d0f76a6455936f8c34c4fbee746419fd24fa715091124db0

• bugzilla.mozilla.orgModerate Severity internally found bugs fixed in Firefox 155 and Firefox ESR 153.2https://bugzilla.mozilla.org/buglist.cgi?bug_id=2054619%2C2054620%2C2054624%2C2054702%2C2054726%2C2054775%2C2055703%2C2058006%2C2058013%2C2058098%2C2058627%2C2058661%2C2059127%2C2059128%2C2059180%2C2059199%2C2059205%2C2061320%2C2061430%2C2061495%2C2061505%2C2061532%2C2061799
• bugzilla.mozilla.orgHigh Severity internally found bugs fixed in Firefox 155 and Firefox ESR 153.2https://bugzilla.mozilla.org/buglist.cgi?bug_id=2054625%2C2059002%2C2061775
• bugzilla.mozilla.orgLow Severity internally found bugs fixed in Firefox 155 and Firefox ESR 153.2https://bugzilla.mozilla.org/buglist.cgi?bug_id=2054691%2C2058085%2C2059144%2C2059191%2C2059192%2C2061521%2C2062395%2C2062404
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-82/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-85/