CVE-2026-6783
Integer Overflow in Firefox Audio/Video Playback Component
Publication date: 2026-04-21
Last updated on: 2026-04-22
Assigner: Mozilla Corporation
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mozilla | firefox | to 150.0 (exc) |
| mozilla | thunderbird | to 150.0 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-190 | The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability involves incorrect boundary conditions and an integer overflow in the Audio/Video playback component of Firefox. An integer overflow occurs when a calculation exceeds the maximum size that can be stored in an integer variable, potentially leading to unexpected behavior or security issues.
How can this vulnerability impact me? :
Exploitation of this vulnerability could lead to unexpected behavior in the Audio/Video playback component, which might be leveraged by an attacker to cause crashes, execute arbitrary code, or compromise the security of the affected system.
What immediate steps should I take to mitigate this vulnerability?
The vulnerability was fixed in Firefox 150. To mitigate this vulnerability, you should update your Firefox browser to version 150 or later.