Out-of-bounds Write in unfilter_scanline in warmcat libwebsockets allows, when the LWS_WITH_UPNG flag is enabled during compilation and the HTML display stack is used, to write past a heap allocated buffer possibly causing a crash, when the user visits an attacker controlled website that contains a crafted PNG file with a big width value that causes an integer overflow which value is used for determining the size of a heap allocation.
Metrics
Affected Vendors & Products
References
History
Tue, 21 Oct 2025 12:15:00 +0000
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threat_severity
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cvssV3_1
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Tue, 21 Oct 2025 09:45:00 +0000
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Warmcat
Warmcat libwebsockets |
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Vendors & Products |
Warmcat
Warmcat libwebsockets |
Mon, 20 Oct 2025 15:15:00 +0000
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ssvc
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Mon, 20 Oct 2025 14:15:00 +0000
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Description | Out-of-bounds Write in unfilter_scanline in warmcat libwebsockets allows, when the LWS_WITH_UPNG flag is enabled during compilation and the HTML display stack is used, to write past a heap allocated buffer possibly causing a crash, when the user visits an attacker controlled website that contains a crafted PNG file with a big width value that causes an integer overflow which value is used for determining the size of a heap allocation. | |
Title | Out-of-bounds Write in libwebsockets PNG parsing | |
Weaknesses | CWE-787 | |
References |
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Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: Nozomi
Published: 2025-10-20T14:04:06.854Z
Updated: 2025-10-20T14:34:57.848Z
Reserved: 2025-10-13T09:57:01.900Z
Link: CVE-2025-11680

Updated: 2025-10-20T14:34:50.372Z

Status : Awaiting Analysis
Published: 2025-10-20T14:15:40.520
Modified: 2025-10-21T19:31:25.450
Link: CVE-2025-11680
