7.5

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

Modified
AliasesSUSE-SU-2025:02992-1SUSE-SU-2025:03006-1UBUNTU-CVE-2025-48989
Published 13-08-2025Last modified 12-05-2026

Vulnerability summary

CVE-2025-48989 is a high (CVSS 7.5) Improper Resource Shutdown or Release vulnerability in apache software foundation apache tomcat. EPSS estimates a 3.77% chance of exploitation in the next 30 days, higher than 89.9% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 4% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
3.77%
0%100%
Low · +0.08 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 14 · Related 2
DSA-6120-1DSA-6121-1MGASA-2025-0223RHSA-2025:13685RHSA-2025:14177RHSA-2025:14178

Timeline

  1. 13-08-2025
    PublishedVulnerability first disclosed.
  2. 12-05-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

3.77%

Chance of exploitation in the next 30 days

Percentile

90%

Versus all other CVEs

30-day change

Increase +0.08 pp

From 3.69% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Suse8 products
  • tomcat10&distro=SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS< 10.1.44-150200.5.51.1
  • tomcat10&distro=SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS< 10.1.44-150200.5.51.1
  • tomcat10&distro=SUSE Linux Enterprise Module for Web and Scripting 15 SP6< 10.1.44-150200.5.51.1
  • tomcat10&distro=SUSE Linux Enterprise Module for Web and Scripting 15 SP7< 10.1.44-150200.5.51.1
  • tomcat10&distro=SUSE Linux Enterprise Server 15 SP5-LTSS< 10.1.44-150200.5.51.1
Opensuse5 products
  • tomcat10&distro=openSUSE Leap 15.6< 10.1.44-150200.5.51.1
  • tomcat10&distro=openSUSE Tumbleweed< 10.1.44-1.1
  • tomcat11&distro=openSUSE Leap 15.6< 11.0.10-150600.13.9.1
  • tomcat11&distro=openSUSE Tumbleweed< 11.0.10-1.1
  • tomcat&distro=openSUSE Tumbleweed< 9.0.108-1.1
Ubuntu5 products
  • tomcat10All versions (No fix recorded)
  • tomcat11All versions (No fix recorded)
  • tomcat6All versions (No fix recorded)
  • tomcat8All versions (No fix recorded)
  • tomcat9All versions (No fix recorded)
Debian3 products
  • tomcat10< 10.1.52-1~deb12u1 | < 10.1.52-1~deb13u1 | < 10.1.52-1
  • tomcat11< 11.0.15-1~deb13u1 | < 11.0.11-1
  • tomcat9< 9.0.70-2
Apache1 product
  • tomcat≥ 9.0.1, < 9.0.108 | ≥ 10.0.0, < 10.1.44 | ≥ 11.0.0, < 11.0.10 | 9.0.0:milestone1 | 9.0.0:milestone10 | 9.0.0:milestone11 | 9.0.0:milestone12 | 9.0.0:milestone13 | 9.0.0:milestone14 | 9.0.0:milestone15 | 9.0.0:milestone16 | 9.0.0:milestone17 | 9.0.0:milestone18 | 9.0.0:milestone19 | 9.0.0:milestone2 | 9.0.0:milestone20 | 9.0.0:milestone21 | 9.0.0:milestone22 | 9.0.0:milestone23 | 9.0.0:milestone24 | 9.0.0:milestone25 | 9.0.0:milestone26 | 9.0.0:milestone27 | 9.0.0:milestone3 | 9.0.0:milestone4 | 9.0.0:milestone5 | 9.0.0:milestone6 | 9.0.0:milestone7 | 9.0.0:milestone8 | 9.0.0:milestone9
Apache software foundation1 product
  • apache tomcat≥ 11.0.0-M1, ≤ 11.0.9 | ≥ 10.1.0-M1, ≤ 10.1.43 | ≥ 9.0.0.M1, ≤ 9.0.107
Org.apache.tomcat1 product
  • tomcat-coyote≥ 11.0.0-M1, < 11.0.10 | ≥ 10.1.0-M1, < 10.1.44 | ≥ 9.0.0.M1, < 9.0.108
Org.apache.tomcat.embed1 product
  • tomcat-embed-core≥ 11.0.0-M1, < 11.0.10 | ≥ 10.1.0-M1, < 10.1.44 | ≥ 9.0.0.M1, < 9.0.108

8 vendors · 25 products

References

19 links
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