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01 Record

CVE-2025-48989

Apache Tomcat: h2 DoS - Made You Reset

HighPUBLISHEDCNA: apache
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
View raw JSON

02 Description

Apache Tomcat: h2 DoS - Made You Reset

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
3.68% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 89.2% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2025-08-13 12:11Z1 YR AGO
Last updated
2026-05-12 12:08Z5 MO AGO
Reserved
2025-05-29
Assigning CNA
apache
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-404Improper Resource Shutdown or ReleaseClass
  • CWE-400Uncontrolled Resource ConsumptionClass
Data version
5.2
Document digest
f1d4fd5a15af6ef930215a9604f56ebce2670225632fc7dd752cede9ee6a3630

05 Affected products

VendorProductVersionsPlatforms
Apache Software FoundationApache Tomcat11.0.0-M1 to 11.0.9, 10.1.0-M1 to 10.1.43, 9.0.0.M1 to 9.0.107—

06 References

07 Fixed in

AlmaLinux 8

  • tomcat
    Fixed in 1:9.0.87-1.el8_10.6
  • tomcat-admin-webapps
    Fixed in 1:9.0.87-1.el8_10.6
  • tomcat-docs-webapp
    Fixed in 1:9.0.87-1.el8_10.6
  • tomcat-el-3.0-api
    Fixed in 1:9.0.87-1.el8_10.6
  • tomcat-jsp-2.3-api
    Fixed in 1:9.0.87-1.el8_10.6
  • tomcat-lib
    Fixed in 1:9.0.87-1.el8_10.6
  • tomcat-servlet-4.0-api
    Fixed in 1:9.0.87-1.el8_10.6
  • tomcat-webapps
    Fixed in 1:9.0.87-1.el8_10.6

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 9

  • tomcat
    Fixed in 1:9.0.87-3.el9_6.3
  • tomcat-admin-webapps
    Fixed in 1:9.0.87-3.el9_6.3
  • tomcat-docs-webapp
    Fixed in 1:9.0.87-3.el9_6.3
  • tomcat-el-3.0-api
    Fixed in 1:9.0.87-3.el9_6.3
  • tomcat-jsp-2.3-api
    Fixed in 1:9.0.87-3.el9_6.3
  • tomcat-lib
    Fixed in 1:9.0.87-3.el9_6.3
  • tomcat-servlet-4.0-api
    Fixed in 1:9.0.87-3.el9_6.3
  • tomcat-webapps
    Fixed in 1:9.0.87-3.el9_6.3

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 10

  • tomcat9
    Fixed in 1:9.0.87-5.el10_0.3
  • tomcat9-admin-webapps
    Fixed in 1:9.0.87-5.el10_0.3
  • tomcat9-docs-webapp
    Fixed in 1:9.0.87-5.el10_0.3
  • tomcat9-el-3.0-api
    Fixed in 1:9.0.87-5.el10_0.3
  • tomcat9-jsp-2.3-api
    Fixed in 1:9.0.87-5.el10_0.3
  • tomcat9-lib
    Fixed in 1:9.0.87-5.el10_0.3
  • tomcat9-servlet-4.0-api
    Fixed in 1:9.0.87-5.el10_0.3
  • tomcat9-webapps
    Fixed in 1:9.0.87-5.el10_0.3

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • tomcat
    Fixed in 1:9.0.87-1.el8_10.6
  • tomcat-admin-webapps
    Fixed in 1:9.0.87-1.el8_10.6
  • tomcat-docs-webapp
    Fixed in 1:9.0.87-1.el8_10.6
  • tomcat-el-3.0-api
    Fixed in 1:9.0.87-1.el8_10.6
  • tomcat-jsp-2.3-api
    Fixed in 1:9.0.87-1.el8_10.6
  • tomcat-lib
    Fixed in 1:9.0.87-1.el8_10.6
  • tomcat-servlet-4.0-api
    Fixed in 1:9.0.87-1.el8_10.6
  • tomcat-webapps
    Fixed in 1:9.0.87-1.el8_10.6

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • tomcat
    Fixed in 1:9.0.87-3.el9_6.3
  • tomcat-admin-webapps
    Fixed in 1:9.0.87-3.el9_6.3
  • tomcat-docs-webapp
    Fixed in 1:9.0.87-3.el9_6.3
  • tomcat-el-3.0-api
    Fixed in 1:9.0.87-3.el9_6.3
  • tomcat-jsp-2.3-api
    Fixed in 1:9.0.87-3.el9_6.3
  • tomcat-lib
    Fixed in 1:9.0.87-3.el9_6.3
  • tomcat-servlet-4.0-api
    Fixed in 1:9.0.87-3.el9_6.3
  • tomcat-webapps
    Fixed in 1:9.0.87-3.el9_6.3

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 10

  • tomcat9
    Fixed in 1:9.0.87-5.el10_0.3
  • tomcat9-admin-webapps
    Fixed in 1:9.0.87-5.el10_0.3
  • tomcat9-docs-webapp
    Fixed in 1:9.0.87-5.el10_0.3
  • tomcat9-el-3.0-api
    Fixed in 1:9.0.87-5.el10_0.3
  • tomcat9-jsp-2.3-api
    Fixed in 1:9.0.87-5.el10_0.3
  • tomcat9-lib
    Fixed in 1:9.0.87-5.el10_0.3
  • tomcat9-servlet-4.0-api
    Fixed in 1:9.0.87-5.el10_0.3
  • tomcat9-webapps
    Fixed in 1:9.0.87-5.el10_0.3

Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • tomcat10
    Fixed in 10.1.52-1~deb12u1
  • tomcat9
    Fixed in 9.0.70-2

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • tomcat10
    Fixed in 10.1.52-1~deb13u1
  • tomcat11
    Fixed in 11.0.15-1~deb13u1
  • tomcat9
    Fixed in 9.0.70-2

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • tomcat10
    Fixed in 10.1.52-1
  • tomcat11
    Fixed in 11.0.11-1
  • tomcat9
    Fixed in 9.0.70-2

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • tomcat10
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 25.10

  • tomcat10
    No fix yet
  • tomcat11
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.04 LTS

  • tomcat10
    No fix yet
  • tomcat11
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.10

  • tomcat10
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • tomcat6
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • tomcat8
    No fix yet
  • tomcat9
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 20.04 LTS

  • tomcat9
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 22.04 LTS

  • tomcat9
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.