CERT-FR Warns of Firefox iOS Flaws
CERT-FR advisory lists three vulnerabilities in Firefox for iOS before version 160.0 allowing privilege escalation and an unspecified security issue.
Sourcecert.cyber.gouv.fr — open the original
What to check
- Applies to
- The 3 CVEs named below. Whether you run an affected version is not assessed: check the versions the source lists.
- Exploitation
- No exploitation in the wild and no public exploit is recorded for the CVEs named.
CERT-FR published an advisory referencing Mozilla security bulletin mfsa2026-124, detailing three CVEs (CVE-2026-121841, CVE-2026-121842, CVE-2026-121843) affecting Firefox for iOS versions prior to 160.0. The vulnerabilities could allow an attacker to achieve privilege escalation, as well as an additional security issue not specified by the vendor.
No evidence of active exploitation is mentioned in the advisory. Defenders and users should update Firefox for iOS to version 160.0 or later as per Mozilla's official security bulletin to remediate these issues.
Mentioned in this report
Source reporting: https://www.cert.cyber.gouv.fr/avis/CERTFR-2026-AVI-1490
Free public brief. Slack alerts on the vendors you run come with the paid plans, and a new account gets three days of them, no card.
What this brief leaves out
This page is the free tier: the write-up, the severity, the names. In the app the same report carries live profiles of the CVEs it names. The paid plans add the security research and news reporting the free tier leaves out.
It sits in a corpus of 16,436 reports from 149 sources, 661 of them written in the last seven days, and it grows through the day.
A new account starts with three days of all of it, no card, then keeps the government and CERT reporting free. Slack alerts are a paid-plan feature: name the vendors you run and Slack hears about the reports that touch them, not the rest of the week's. Nothing is charged unless you subscribe.
Create a free account What it costs