# CVE-2025-48989: Apache Tomcat: h2 DoS - Made You Reset > Attackers can cause a denial of service in Apache Tomcat via improper resource shutdown, requiring an upgrade to patched versions. - **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 13 Aug 2025 - **Updated:** 12 May 2026 - **Also known as:** BIT-tomcat-2025-48989, CLSA-2025-1757011448, CLSA-2025-1761005194, CLSA-2026-1773101695, CLSA-2026-1786443758, DEBIAN-CVE-2025-48989, GHSA-gqp3-2cvr-x8m3, MINI-2vgr-4mc5-9rm6, MINI-57p2-xf59-5hqq, MINI-6qhh-cpp9-g22h, MINI-6v9j-jv3w-vmwm, MINI-f353-p788-rrc3, MINI-vrx7-2837-8qw4, ROOT-APP-MAVEN-CVE-2025-48989, SUSE-SU-2025:02992-1, SUSE-SU-2025:03006-1, UBUNTU-CVE-2025-48989, openSUSE-SU-2025:15488-1, openSUSE-SU-2025:15489-1, openSUSE-SU-2025:15490-1 ## What is CVE-2025-48989? CVE-2025-48989 is a high-severity denial of service vulnerability in Apache Tomcat, published on 13 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description Improper Resource Shutdown or Release vulnerability in Apache Tomcat made Tomcat vulnerable to the made you reset attack. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.9, from 10.1.0-M1 through 10.1.43 and from 9.0.0.M1 through 9.0.107. Older, EOL versions may also be affected. Users are recommended to upgrade to one of versions 11.0.10, 10.1.44 or 9.0.108 which fix the issue. Weakness: CWE-404 (Improper Resource Shutdown or Release) ## Which versions are affected by CVE-2025-48989? 13 open source packages ship an affected version, including org.apache.tomcat.embed:tomcat-embed-core, tomcat and org.apache.tomcat:tomcat-coyote. It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `org.apache.tomcat.embed:tomcat-embed-core` | Maven | From 10.1.0-M1 | 10.1.44 | | `org.apache.tomcat.embed:tomcat-embed-core` | Maven | From 10.1.0-M1 | 10.1.44 | | `org.apache.tomcat.embed:tomcat-embed-core` | Maven | From 11.0.0-M1 | 11.0.10 | | `org.apache.tomcat.embed:tomcat-embed-core` | Maven | From 11.0.0-M1 | 11.0.10 | | `org.apache.tomcat.embed:tomcat-embed-core` | Maven | From 9.0.0.M1 | 9.0.108 | | `org.apache.tomcat.embed:tomcat-embed-core` | Maven | From 9.0.0.M1 | 9.0.108 | | `tomcat` | Bitnami | All versions | 9.0.108, 10.1.44, 11.0.10 | | `org.apache.tomcat:tomcat-coyote` | Maven | From 10.1.0-M1 | 10.1.44 | | `org.apache.tomcat:tomcat-coyote` | Maven | From 10.1.0-M1 | 10.1.44 | | `org.apache.tomcat:tomcat-coyote` | Maven | From 11.0.0-M1 | 11.0.10 | | `org.apache.tomcat:tomcat-coyote` | Maven | From 11.0.0-M1 | 11.0.10 | | `org.apache.tomcat:tomcat-coyote` | Maven | From 9.0.0.M1 | 9.0.108 | | `org.apache.tomcat:tomcat-coyote` | Maven | From 9.0.0.M1 | 9.0.108 | | `tomcat10` | SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | All versions | 10.1.44-150200.5.51.1 | | `tomcat10` | SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS | All versions | 10.1.44-150200.5.51.1 | | `tomcat10` | SUSE:Linux Enterprise Module for Web and Scripting 15 SP6 | All versions | 10.1.44-150200.5.51.1 | | `tomcat11` | SUSE:Linux Enterprise Module for Web and Scripting 15 SP6 | All versions | 11.0.10-150600.13.9.1 | | `tomcat10` | SUSE:Linux Enterprise Module for Web and Scripting 15 SP7 | All versions | 10.1.44-150200.5.51.1 | | `tomcat11` | SUSE:Linux Enterprise Module for Web and Scripting 15 SP7 | All versions | 11.0.10-150600.13.9.1 | | `tomcat10` | SUSE:Linux Enterprise Server 15 SP5-LTSS | All versions | 10.1.44-150200.5.51.1 | | `tomcat10` | SUSE:Linux Enterprise Server for SAP Applications 15 SP5 | All versions | 10.1.44-150200.5.51.1 | | `tomcat10` | openSUSE:Leap 15.6 | All versions | 10.1.44-150200.5.51.1 | | `tomcat11` | openSUSE:Leap 15.6 | All versions | 11.0.10-150600.13.9.1 | | `tomcat` | openSUSE:Tumbleweed | All versions | 9.0.108-1.1 | | `tomcat10` | openSUSE:Tumbleweed | All versions | 10.1.44-1.1 | | `tomcat11` | openSUSE:Tumbleweed | All versions | 11.0.10-1.1 | Products: Apache Tomcat. ## How do I fix CVE-2025-48989? Upgrade org.apache.tomcat.embed:tomcat-embed-core to a fixed version for your release line: 10.1.44, 11.0.10 or 9.0.108. ## Is CVE-2025-48989 being exploited? There is no known exploitation of CVE-2025-48989 in the wild and no public exploit code. ## Other vulnerabilities in Apache Tomcat - [CVE-2025-24813](https://insights.sbomify.com/CVE-2025-24813/): Apache Tomcat Path Equivalence (critical 10.0, exploited in the wild) - [CVE-2016-8735](https://insights.sbomify.com/CVE-2016-8735/): Apache Tomcat Remote Code Execution (critical 9.8, exploited in the wild) - [CVE-2017-12617](https://insights.sbomify.com/CVE-2017-12617/): Apache Tomcat Remote Code Execution (high 8.1, exploited in the wild) - [CVE-2017-12615](https://insights.sbomify.com/CVE-2017-12615/): Apache Tomcat on Windows Remote Code Execution (high 8.1, exploited in the wild) - [CVE-2026-34486](https://insights.sbomify.com/CVE-2026-34486/): Apache Tomcat Missing Encryption of Sensitive Data (high 7.5, exploited in the wild) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2025-48989 and fix it if it is affected. What it is: CVE-2025-48989 is a high-severity denial of service vulnerability in Apache Tomcat, published on 13 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim. Exploitation: There is no known exploitation of CVE-2025-48989 in the wild and no public exploit code. Affected packages and fixed versions: - org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 10.1.0-M1; fixed in 10.1.44 - org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 10.1.0-M1; fixed in 10.1.44 - org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 11.0.0-M1; fixed in 11.0.10 - org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 11.0.0-M1; fixed in 11.0.10 - org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 9.0.0.M1; fixed in 9.0.108 - org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 9.0.0.M1; fixed in 9.0.108 - tomcat (Bitnami): affected all versions; fixed in 9.0.108, 10.1.44, 11.0.10 - org.apache.tomcat:tomcat-coyote (Maven): affected from 10.1.0-M1; fixed in 10.1.44 - org.apache.tomcat:tomcat-coyote (Maven): affected from 10.1.0-M1; fixed in 10.1.44 - org.apache.tomcat:tomcat-coyote (Maven): affected from 11.0.0-M1; fixed in 11.0.10 - org.apache.tomcat:tomcat-coyote (Maven): affected from 11.0.0-M1; fixed in 11.0.10 - org.apache.tomcat:tomcat-coyote (Maven): affected from 9.0.0.M1; fixed in 9.0.108 Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2025-48989/ (Markdown: https://insights.sbomify.com/CVE-2025-48989/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2025-48989 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-48989 - OSV: https://osv.dev/vulnerability/CVE-2025-48989 --- From sbomify Insights: https://insights.sbomify.com/CVE-2025-48989/ Summaries are generated and may contain mistakes; the official description above is the record.