--- title: CVE-2025-11680 description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2025-11680 --- # CVE-2025-11680 Publication date 20 October 2025 Last updated 29 October 2025 --- Ubuntu priority **Medium** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) Toggle side navigation ## 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. ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | libwebsockets | 25.10 questing | Not affected | | 25.04 plucky | Ignored end of life, was needs-triage | | 24.04 LTS noble | Not affected | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not affected | | 18.04 LTS bionic | Not affected | | 16.04 LTS xenial | Not affected | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-11680) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2025-11680) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2025-11680) * [Debian](https://security-tracker.debian.org/tracker/CVE-2025-11680) ### Other references * * *