--- title: "CVE-2026-65705\n | Ubuntu" 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-2026-65705?format=md keywords: index, follow --- # CVE-2026-65705 Publication date 23 July 2026 Last updated 4 September 2026 --- Ubuntu priority **Medium** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) ## Cvss 3 Severity Score **7.8 · High** [Score breakdown](https://ubuntu.com/security/CVE-2026-65705?format=md#impact-score) Toggle side navigation ## Description FFmpeg versions 3.4 through 8.1.2 contain an out-of-bounds write vulnerability in the vf\_floodfill video filter that allows attackers to corrupt heap memory by supplying a dynamically sized video stream with filtergraph reinitialization disabled via -reinit\_filter 0. When config\_input() allocates the points traversal stack based on initial frame dimensions and a subsequent larger frame is processed, filter\_frame() performs flood-fill neighbor pushes beyond the original allocation boundary, resulting in heap corruption and process crash with potential for code execution depending on heap layout and process hardening. [Read the notes from the security team](https://ubuntu.com/security/CVE-2026-65705?format=md#notes) ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | ffmpeg | 26.04 LTS resolute | Vulnerable | | 24.04 LTS noble | Fixed 7:6.1.1-3ubuntu5+esm13 Ubuntu Pro | | 22.04 LTS jammy | Fixed 7:4.4.2-0ubuntu0.22.04.1+esm15 Ubuntu Pro | | 20.04 LTS focal | Fixed 7:4.2.7-0ubuntu0.1+esm16 Ubuntu Pro | | 18.04 LTS bionic | Fixed 7:3.4.11-0ubuntu0.1+esm15 Ubuntu Pro | | 16.04 LTS xenial | Not affected | | libav | 26.04 LTS resolute | Not in release | | 24.04 LTS noble | Not in release | | 22.04 LTS jammy | Not in release | | 14.04 LTS trusty | Needs evaluation | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) ### Get expanded security coverage with Ubuntu Pro Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use. [Get Ubuntu Pro](https://ubuntu.com/pro) [30-day free trial](https://ubuntu.com/pro/free-trial) ## Notes --- ### [leosilva](https://launchpad.net/~leosilva) CVE-2026-65705: xenial not-affected — vf\_floodfill.c absent (introduced 3.4) ## Severity score breakdown CVSS version: CVSS v4.0 [CVSS v4.0](https://ubuntu.com/security/CVE-2026-65705?format=md) [CVSS v3.0](https://ubuntu.com/security/CVE-2026-65705?format=md) **Base score** 7.3 · High * Base metrics | Parameter | Value | | --- | --- | | Attack vector | Local | | Attack complexity | Low | | Attack requirements | Present | | Privileges required | None | | User interaction | Passive | | Vulnerable system - Confidentiality impact | High | | Vulnerable system - Integrity impact | High | | Vulnerable system - Availability impact | High | | Subsequent system - Confidentiality impact | None | | Subsequent system - Integrity impact | None | | Subsequent system - Availability impact | None | * Scores | Parameter | Value | | --- | --- | | Base score | 7.3 · High | | Base + Threat score | - | | Base + Environmental score | - | | Base + Threat + Environmental score | - | **Vector:** CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-65705) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-65705) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-65705) * [Debian](https://security-tracker.debian.org/tracker/CVE-2026-65705) ### Related Ubuntu Security Notices (USN) + [USN-8716-1](https://usn.ubuntu.com/USN-8716-1) + FFmpeg vulnerabilities + 3 September 2026 ### Other references * * * *