MFSA2026-15: Security Vulnerabilities fixed in Firefox ESR 140.8
Security Vulnerabilities fixed in Firefox ESR 140.8
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 140.8 - Upgrade
Upgrade
Firefox ESRto a version that resolves this vulnerability.Fixed in 140.8
Event History
Child vulnerabilities
Contains the following vulnerabilities.
- CVE-2026-2757
- CVE-2026-2758
- CVE-2026-2759
- CVE-2026-2760
- CVE-2026-2761
- CVE-2026-2762
- CVE-2026-2763
- CVE-2026-2764
- CVE-2026-2765
- CVE-2026-2766
- CVE-2026-2767
- CVE-2026-2768
- CVE-2026-2769
- CVE-2026-2770
- CVE-2026-2771
- CVE-2026-2772
- CVE-2026-2773
- CVE-2026-2774
- CVE-2026-2775
- CVE-2026-2776
- CVE-2026-2777
- CVE-2026-2778
- CVE-2026-2779
- CVE-2026-2780
- CVE-2026-2781
- CVE-2026-2782
- CVE-2026-2783
- CVE-2026-2784
- CVE-2026-2785
- CVE-2026-2786
- CVE-2026-2787
- CVE-2026-2788
- CVE-2026-2789
- CVE-2026-2790
- CVE-2026-2791
- CVE-2026-2792
- CVE-2026-2793
Frequently Asked Questions
What is the severity of MFSA2026-15?
The severity of MFSA2026-15 includes critical and high-risk vulnerabilities that could lead to potential exploitation.
How do I fix MFSA2026-15?
To fix MFSA2026-15, update your Firefox ESR to version 140.8 or later.
What vulnerabilities are addressed in MFSA2026-15?
MFSA2026-15 addresses multiple security vulnerabilities including memory safety issues and potential remote code execution.
Who is affected by MFSA2026-15?
Users of Firefox ESR versions prior to 140.8 are affected by MFSA2026-15.
Is there a workaround for MFSA2026-15?
There are no known workarounds for MFSA2026-15, so updating to the latest version is essential.