--- title: "CVE-2025-9019\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-2025-9019?format=md keywords: index, follow --- # CVE-2025-9019 Publication date 15 August 2025 Last updated 11 September 2026 --- Ubuntu priority **Medium** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) ## Cvss 3 Severity Score **3.1 · Low** [Score breakdown](https://ubuntu.com/security/CVE-2025-9019?format=md#impact-score) Toggle side navigation ## Description A vulnerability has been found in tcpreplay 4.5.1. This vulnerability affects the function mask\_cidr6 of the file cidr.c of the component tcpprep. The manipulation leads to heap-based buffer overflow. The attack can be initiated remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. The researcher is able to reproduce this with the latest official release 4.5.1 and the current master branch. The code maintainer cannot reproduce this for 4.5.2-beta1. In his reply the maintainer explains that "[i]n that case, this is a duplicate that was fixed in 4.5.2." ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | tcpreplay | 26.04 LTS resolute | Needs evaluation | | 25.10 questing | Ignored end of life, was needs-triage | | 25.04 plucky | Ignored end of life, was needs-triage | | 24.04 LTS noble | Needs evaluation | | 22.04 LTS jammy | Needs evaluation | | 20.04 LTS focal | Needs evaluation | | 18.04 LTS bionic | Needs evaluation | | 16.04 LTS xenial | 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) ## Severity score breakdown CVSS version: CVSS v4.0 [CVSS v4.0](https://ubuntu.com/security/CVE-2025-9019?format=md) [CVSS v3.0](https://ubuntu.com/security/CVE-2025-9019?format=md) **Base score** 1.3 · Low * Base metrics | Parameter | Value | | --- | --- | | Attack vector | Network | | Attack complexity | High | | Attack requirements | None | | Privileges required | None | | User interaction | Passive | | Vulnerable system - Confidentiality impact | None | | Vulnerable system - Integrity impact | None | | Vulnerable system - Availability impact | Low | | Subsequent system - Confidentiality impact | None | | Subsequent system - Integrity impact | None | | Subsequent system - Availability impact | None | * Scores | Parameter | Value | | --- | --- | | Base score | 1.3 · Low | | Base + Threat score | - | | Base + Environmental score | - | | Base + Threat + Environmental score | - | **Vector:** CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-9019) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2025-9019) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2025-9019) * [Debian](https://security-tracker.debian.org/tracker/CVE-2025-9019) ### Other references * * * * * * * * * * * *