CVE-2025-11680
BaseFortify
Publication date: 2025-10-20
Last updated on: 2025-10-21
Assigner: Nozomi Networks Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| warmcat | libwebsockets | 4.4.2 |
| warmcat | libwebsockets | 4.1 |
| warmcat | libwebsockets | 4.3.6 |
| warmcat | libwebsockets | 4.2 |
| warmcat | libwebsockets | 4.0 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-787 | The product writes data past the end, or before the beginning, of the intended buffer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is an out-of-bounds write in the unfilter_scanline function of warmcat libwebsockets. It occurs when the LWS_WITH_UPNG flag is enabled during compilation and the HTML display stack is used. An attacker can craft a PNG file with a very large width value that causes an integer overflow, leading to writing past the allocated heap buffer. This can cause the program to crash when a user visits a malicious website hosting this crafted PNG file.
How can this vulnerability impact me? :
The vulnerability can cause a crash of the application using warmcat libwebsockets when processing a malicious PNG file from an attacker-controlled website. This could lead to denial of service or potentially other undefined behavior due to memory corruption.