CVE-2026-4714: Incorrect boundary conditions in the Audio/Video component
Incorrect boundary conditions in the Audio/Video component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.
Other sources
Incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
— MITRE
Affected Software
Event History
Parent advisories
This vulnerability appears in the following advisories.
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2026-4684
- CVE-2026-4685
- CVE-2026-4686
- CVE-2026-4687
- CVE-2026-4688
- CVE-2026-4689
- CVE-2026-4690
- CVE-2026-4691
- CVE-2026-4692
- CVE-2026-4693
- CVE-2026-4694
- CVE-2026-4695
- CVE-2026-4696
- CVE-2026-4697
- CVE-2026-4698
- CVE-2026-4699
- CVE-2026-4700
- CVE-2026-4701
- CVE-2026-4722
- CVE-2026-4702
- CVE-2026-4723
- CVE-2026-4724
- CVE-2026-4704
- CVE-2026-4705
- CVE-2026-4706
- CVE-2026-4707
- CVE-2026-4708
- CVE-2026-4709
- CVE-2026-4710
- CVE-2026-4711
- CVE-2026-4725
- CVE-2026-4712
- CVE-2026-4713
- CVE-2026-4714
- CVE-2026-4715
- CVE-2026-4716
- CVE-2026-4717
- CVE-2026-4726
- CVE-2025-59375
- CVE-2026-4727
- CVE-2026-4728
- CVE-2026-4718
- CVE-2026-4719
- CVE-2026-4720
- CVE-2026-4729
- CVE-2026-4721
- CVE-2026-3889
- CVE-2026-4371
Frequently Asked Questions
What is the severity of CVE-2026-4714?
CVE-2026-4714 has been classified as a critical vulnerability due to its potential for causing significant security risks in affected versions of Firefox.
How do I fix CVE-2026-4714?
To fix CVE-2026-4714, update your Firefox or Firefox ESR to the latest version, specifically Firefox 149 or higher and Firefox ESR 140.9 or higher.
What versions of Firefox are affected by CVE-2026-4714?
CVE-2026-4714 affects Firefox versions lower than 149 and Firefox ESR versions lower than 140.9.
What type of vulnerability is CVE-2026-4714?
CVE-2026-4714 is an incorrect boundary condition vulnerability within the Audio/Video component.
Is it safe to use Firefox with CVE-2026-4714?
Using Firefox versions affected by CVE-2026-4714 poses security risks, and it is advisable to upgrade to a patched version immediately.