CVE-2025-48989: Apache Tomcat: h2 DoS - Made You Reset

Published Jun 18, 2025
·
Updated

HTTP/2 (including DNS over HTTPS) contains a design flaw and is vulnerable to "MadeYouReset" DoS attack through HTTP/2 control frames Vulnerabilities.

Other sources

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.

— GitHub

Affected Software

39 affected componentsFixes available
Apache Tomcat>=11.0.0-M1<=11.0.9, >=10.1.0-M1<=10.1.43, >=9.0.0.M1<=9.0.107
maven/org.apache.tomcat:tomcat-coyote>=9.0.0.M1<9.0.108
9.0.108
maven/org.apache.tomcat:tomcat-coyote>=10.1.0-M1<10.1.44
10.1.44
maven/org.apache.tomcat:tomcat-coyote>=11.0.0-M1<11.0.10
11.0.10
Apache Tomcat>=9.0.1<9.0.108
Apache Tomcat>=10.0.0<10.1.44
Apache Tomcat>=11.0.0<11.0.10
Apache Tomcat=9.0.0-milestone1
Apache Tomcat=9.0.0-milestone10
Apache Tomcat=9.0.0-milestone11
Apache Tomcat=9.0.0-milestone12
Apache Tomcat=9.0.0-milestone13
Apache Tomcat=9.0.0-milestone14
Apache Tomcat=9.0.0-milestone15
Apache Tomcat=9.0.0-milestone16
Apache Tomcat=9.0.0-milestone17
Apache Tomcat=9.0.0-milestone18
Apache Tomcat=9.0.0-milestone19
Apache Tomcat=9.0.0-milestone2
Apache Tomcat=9.0.0-milestone20
Apache Tomcat=9.0.0-milestone21
Apache Tomcat=9.0.0-milestone22
Apache Tomcat=9.0.0-milestone23
Apache Tomcat=9.0.0-milestone24
Apache Tomcat=9.0.0-milestone25
Apache Tomcat=9.0.0-milestone26
Apache Tomcat=9.0.0-milestone27
Apache Tomcat=9.0.0-milestone3
Apache Tomcat=9.0.0-milestone4
Apache Tomcat=9.0.0-milestone5
Apache Tomcat=9.0.0-milestone6
Apache Tomcat=9.0.0-milestone7
Apache Tomcat=9.0.0-milestone8
Apache Tomcat=9.0.0-milestone9
maven/org.apache.tomcat.embed:tomcat-embed-core>=9.0.0.M1<9.0.108
9.0.108
maven/org.apache.tomcat.embed:tomcat-embed-core>=10.1.0-M1<10.1.44
10.1.44
maven/org.apache.tomcat.embed:tomcat-embed-core>=11.0.0-M1<11.0.10
11.0.10
F5 Traffix SDC=5.2.0
IBM API Connect V12 OnPrem<=All

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade maven/org.apache.tomcat:tomcat-coyote to a version that resolves this vulnerability.

    Fixed in 9.0.108
  2. Upgrade

    Upgrade maven/org.apache.tomcat:tomcat-coyote to a version that resolves this vulnerability.

    Fixed in 10.1.44
  3. Upgrade

    Upgrade maven/org.apache.tomcat:tomcat-coyote to a version that resolves this vulnerability.

    Fixed in 11.0.10
  4. Upgrade

    Upgrade maven/org.apache.tomcat.embed:tomcat-embed-core to a version that resolves this vulnerability.

    Fixed in 9.0.108
  5. Upgrade

    Upgrade maven/org.apache.tomcat.embed:tomcat-embed-core to a version that resolves this vulnerability.

    Fixed in 10.1.44
  6. Upgrade

    Upgrade maven/org.apache.tomcat.embed:tomcat-embed-core to a version that resolves this vulnerability.

    Fixed in 11.0.10
  7. Upgrade

    Upgrade Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 11.0.10
  8. Upgrade

    Upgrade Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 10.1.44
  9. Upgrade

    Upgrade Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 9.0.108

Event History

Jun 18, 2025
Data Sourced
via Red Hat·08:40 AM
DescriptionSeverityAffected Software
Aug 13, 2025
CVE Published
via MITRE·12:11 PM
Data Sourced
via MITRE·12:11 PM
DescriptionWeakness
Data Sourced
via NVD·01:15 PM
DescriptionSeverityWeaknessAffected Software
Advisory Published
via GitHub·03:30 PM
Data Sourced
via GitHub·03:30 PM
DescriptionSeverityWeaknessAffected Software
Nov 13, 2025
Advisory Published
via F5·05:15 PM
Data Sourced
via F5·05:15 PM
DescriptionSeverityWeaknessAffected Software
Jul 7, 2026
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2025-48989?

CVE-2025-48989 is categorized with a moderate severity level due to its potential impacts on resource management.

2

How do I fix CVE-2025-48989?

To remediate CVE-2025-48989, upgrade Apache Tomcat to version 11.0.10 or later, 10.1.44 or later, or 9.0.108 or later.

3

What versions of Apache Tomcat are affected by CVE-2025-48989?

CVE-2025-48989 affects Apache Tomcat versions 11.0.0-M1 through 11.0.9, 10.1.0-M1 through 10.1.43, and 9.0.0.M1 through 9.0.107.

4

What is the nature of the vulnerability identified in CVE-2025-48989?

CVE-2025-48989 is an improper resource shutdown or release vulnerability that can lead to the made you reset attack.

5

Is there a risk of exploitation for CVE-2025-48989?

Yes, CVE-2025-48989 poses a risk of exploitation through denial-of-service attacks if not addressed in affected versions.

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