CVE-2026-16404
published 2026-07-21CVE-2026-16404: Spoofing issue in Firefox for Android. This vulnerability was fixed in Firefox 153.
PriorityP335high7.4CVSS 3.1
AVNACLPRNUIRSCCNIHAN
EPSS
0.16%
5.6th percentile
Spoofing issue in Firefox for Android. This vulnerability was fixed in Firefox 153.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 153 | Firefox 153 |
| mozilla | firefox_mobile | < 153.0 | 153.0 |
CVSS provenance
nvdv3.17.4HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
vendor_redhat7.4HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Red Hat
firefox: Spoofing issue in Firefox for Android
vendor_redhat·2026-07-21·CVSS 7.4
CVE-2026-16404 [HIGH] CWE-290 firefox: Spoofing issue in Firefox for Android
firefox: Spoofing issue in Firefox for Android
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
Spoofing issue in Firefox for Android
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: firefox (Red Hat Enterprise Linux 10) - Not affected
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Not affected
Package: firefox (Red Hat Enterprise Linux 6) - Not affected
Package: firefox (Red Hat Enterprise Linux 7) - Not affected
Package: firefox (Red Hat Enterprise Linux 8) - Not affected
Package: firefox (Red Hat Enterprise Linux 9) - Not affected
Mozilla
Mozilla Foundation Security Advisory 2026-68: CVE-2026-16404
vendor_mozilla
CVE-2026-16404 Mozilla Foundation Security Advisory 2026-68: CVE-2026-16404
Mozilla Foundation Security Advisory 2026-68
CVE: CVE-2026-16404
Product: Firefox
Impact: high
Fixed in: Firefox 153
GHSA
Spoofing issue in Firefox for Android.
ghsa_unreviewed·2026-07-21
CVE-2026-16404 [HIGH] CWE-290 Spoofing issue in Firefox for Android.
Spoofing issue in Firefox for Android. This vulnerability was fixed in Firefox 153.
No detection rules found.
No public exploits indexed.
2026-07-21
Published