CVE-2025-52434

CVSS 7.5 · HIGH
EPSS p79
Higher than 79% of all CVEs — moderate exploitation risk.
Patch available
Vendor advisory or patch linked

Published 7/10/2025 · updated 11/4/2025 · CWE-362

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Summary

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Tomcat when using the APR/Native connector. This was particularly noticeable with client initiated closes of HTTP/2 connections. This issue affects Apache Tomcat: from 9.0.0.M1 through 9.0.106. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 through 8.5.100. Other, older, EOL versions may also be affected. Users are recommended to upgrade to version 9.0.107, which fixes the issue.

CVSS 7.5HIGH

7.5 / 10
  • AV: Network
  • AC: Low complexity
  • PR: No privileges
  • UI: No user interaction
  • S: Scope unchanged
  • C: Confidentiality: None
  • I: Integrity: None
  • A: Availability: High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS exploitation probability

1.2%

Percentile p79 Higher than 79% of all CVEs — moderate exploitation risk.

Affected products

1 vendor/product entries
  • Apache Tomcat≥ 9.0.0 and < 9.0.107
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Timeline

  1. Jul 10, 2025 · Disclosed / published in NVD
  2. Nov 4, 2025 · Intel last updated

Intel sources

Which upstream feeds returned data for this CVE, and when they were last fetched.

  • NVD· 53 days ago
  • CVE.org· no data
  • FIRST EPSS· 53 days ago
  • CISA KEV· no data
  • OSV· 53 days ago

References

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